| | | | | | | | | | | | | | | | | | | | | |
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| <FootnoteIndexer/> |
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| <CurrencySymbol/> |
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| <ValueName> Parent Company [Member] </ValueName> |
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| <dimensionId> dei_LegalEntityAxis </dimensionId> |
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| <Label Id="2" Label="Parent Company [Member]"/> |
| <Label Id="3" Label="12/31/2010"/> |
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| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
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| | | <FootnoteIndexer/> |
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| <CurrencySymbol/> |
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| <hasScenarios> false </hasScenarios> |
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| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
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| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
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| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
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| | <Row> |
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| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
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| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
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| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
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| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
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| <NumericAmount> 0.015 </NumericAmount> |
| <RoundedNumericAmount> 0.015 </RoundedNumericAmount> |
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| <NonNumericTextHeader/> |
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| <NonNumericTextHeader/> |
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| <CurrencySymbol/> |
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| <hasScenarios> false </hasScenarios> |
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| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
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| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
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| | | <Label> Average Interest Rate, percentage </Label> |
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| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| | | <ElementName/> |
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| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
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| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
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| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
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| <Cell> |
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| <NonNumericTextHeader/> |
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| <CurrencySymbol/> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
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| <hasScenarios> false </hasScenarios> |
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| <Columns> |
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| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
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| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {dei_LegalEntityAxis} : Parent Company [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-12-31_ParentCompanyMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
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| <IsDefaultForEntity> false </IsDefaultForEntity> |
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| <ValueName> Parent Company [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
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| <dimensionId> dei_LegalEntityAxis </dimensionId> |
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| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
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| <CurrencySymbol> $ </CurrencySymbol> |
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| <Label Id="1" Label="Dec. 31, 2010"/> |
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| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {dei_LegalEntityAxis} : Parent Company [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_ParentCompanyMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Parent Company [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_ParentCompanyMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Dec. 31, 2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Parent Company [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 5 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 6 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 8360000000 </NumericAmount> |
| <RoundedNumericAmount> 8360 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> true </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 340000000 </NumericAmount> |
| <RoundedNumericAmount> 340 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> true </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 7 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 4 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SubsidiariesMember_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 5 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_SubsidiariesMember_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Insurance and Other [Member] | Subsidiaries [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 8 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 9 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.052 </NumericAmount> |
| <RoundedNumericAmount> 0.052 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 10 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 2429000000 </NumericAmount> |
| <RoundedNumericAmount> 2429 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 2614000000 </NumericAmount> |
| <RoundedNumericAmount> 2614 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 11 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 6 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] {us-gaap_ShortTermDebtTypeAxis} : Short-term Debt [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SubsidiariesMember_ShortTermDebtMember_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Short-term Debt [Member] </ValueName> |
| <ValueType> us-gaap_ShortTermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_ShortTermDebtMember </Id> |
| <dimensionId> us-gaap_ShortTermDebtTypeAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="Short-term Debt [Member]"/> |
| <Label Id="4" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 7 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] {us-gaap_ShortTermDebtTypeAxis} : Short-term Debt [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_SubsidiariesMember_ShortTermDebtMember_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Short-term Debt [Member] </ValueName> |
| <ValueType> us-gaap_ShortTermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_ShortTermDebtMember </Id> |
| <dimensionId> us-gaap_ShortTermDebtTypeAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="Short-term Debt [Member]"/> |
| <Label Id="4" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Insurance and Other [Member] | Subsidiaries [Member] | Short-term Debt [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 12 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 13 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.003 </NumericAmount> |
| <RoundedNumericAmount> 0.003 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 14 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_ShortTermBorrowings </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 1682000000 </NumericAmount> |
| <RoundedNumericAmount> 1682 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 1607000000 </NumericAmount> |
| <RoundedNumericAmount> 1607 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph 2, 3 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Subparagraph a(1) -Article 7 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Short-term borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 15 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 8 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Finance and Financial Products [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SubsidiariesMember_FinanceAndFinancialProductsMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Finance and Financial Products [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FinanceAndFinancialProductsMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Finance and Financial Products [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 9 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Finance and Financial Products [Member] {dei_LegalEntityAxis} : Subsidiaries [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_SubsidiariesMember_FinanceAndFinancialProductsMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Finance and Financial Products [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FinanceAndFinancialProductsMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Finance and Financial Products [Member]"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| <Label Id="3" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Finance and Financial Products [Member] | Subsidiaries [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 16 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 17 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.051 </NumericAmount> |
| <RoundedNumericAmount> 0.051 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 18 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 2942000000 </NumericAmount> |
| <RoundedNumericAmount> 2942 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 1718000000 </NumericAmount> |
| <RoundedNumericAmount> 1718 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 19 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 10 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {dei_LegalEntityAxis} : Subsidiaries [Member] {us-gaap_StatementBusinessSegmentsAxis} : MidAmerican [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SubsidiariesMember_MidamericanMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> MidAmerican [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_MidamericanMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Subsidiaries [Member]"/> |
| <Label Id="2" Label="MidAmerican [Member]"/> |
| <Label Id="3" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 11 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {dei_LegalEntityAxis} : Subsidiaries [Member] {us-gaap_StatementBusinessSegmentsAxis} : MidAmerican [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_SubsidiariesMember_MidamericanMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Subsidiaries [Member] </ValueName> |
| <ValueType> dei_LegalEntityAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SubsidiariesMember </Id> |
| <dimensionId> dei_LegalEntityAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> MidAmerican [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_MidamericanMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Subsidiaries [Member]"/> |
| <Label Id="2" Label="MidAmerican [Member]"/> |
| <Label Id="3" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Subsidiaries [Member] | MidAmerican [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 20 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 21 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.058 </NumericAmount> |
| <RoundedNumericAmount> 0.058 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 22 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 14275000000 </NumericAmount> |
| <RoundedNumericAmount> 14275 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 14208000000 </NumericAmount> |
| <RoundedNumericAmount> 14208 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 23 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 12 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 13 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Insurance and Other [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_20091231_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Insurance and Other [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_InsuranceAndOtherMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Insurance and Other [Member]"/> |
| <Label Id="2" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Insurance and Other [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 24 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 25 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 12471000000 </NumericAmount> |
| <RoundedNumericAmount> 12471 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 4561000000 </NumericAmount> |
| <RoundedNumericAmount> 4561 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 26 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 14 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Railroad, Utilities and Energy [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_RailroadUtilitiesAndEnergyMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Railroad, Utilities and Energy [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_RailroadUtilitiesAndEnergyMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Railroad, Utilities and Energy [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 15 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Railroad, Utilities and Energy [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_20091231_RailroadUtilitiesAndEnergyMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Railroad, Utilities and Energy [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_RailroadUtilitiesAndEnergyMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Railroad, Utilities and Energy [Member]"/> |
| <Label Id="2" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Railroad, Utilities and Energy [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 27 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 28 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 31626000000 </NumericAmount> |
| <RoundedNumericAmount> 31626 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 19579000000 </NumericAmount> |
| <RoundedNumericAmount> 19579 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 29 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 16 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : MidAmerican [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_MidamericanMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> MidAmerican [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_MidamericanMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="MidAmerican [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 17 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : MidAmerican [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_MidamericanMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> MidAmerican [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_MidamericanMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="MidAmerican [Member]"/> |
| <Label Id="2" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> MidAmerican [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 30 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 31 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.061 </NumericAmount> |
| <RoundedNumericAmount> 0.061 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 32 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_UnsecuredDebt </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 5371000000 </NumericAmount> |
| <RoundedNumericAmount> 5371 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 5371000000 </NumericAmount> |
| <RoundedNumericAmount> 5371 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Article 5 -Subsection 19, 20, 22 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Senior unsecured debt </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 33 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 18 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Burlington Northern Santa Fe Corporation [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_BurlingtonNorthernSantaFeCorporationMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Burlington Northern Santa Fe Corporation [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_BurlingtonNorthernSantaFeCorporationMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Burlington Northern Santa Fe Corporation [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Burlington Northern Santa Fe Corporation [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 34 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 35 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.061 </NumericAmount> |
| <RoundedNumericAmount> 0.061 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 36 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 11980000000 </NumericAmount> |
| <RoundedNumericAmount> 11980 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 37 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 19 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Finance and Financial Products [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_FinanceAndFinancialProductsMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Finance and Financial Products [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FinanceAndFinancialProductsMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Finance and Financial Products [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 20 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Finance and Financial Products [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_20091231_FinanceAndFinancialProductsMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Finance and Financial Products [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FinanceAndFinancialProductsMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Finance and Financial Products [Member]"/> |
| <Label Id="2" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Finance and Financial Products [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 38 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 39 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 14477000000 </NumericAmount> |
| <RoundedNumericAmount> 14477 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 13769000000 </NumericAmount> |
| <RoundedNumericAmount> 13769 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 40 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName/> |
| | | <ElementPrefix> na </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> na </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> true </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> http://www.berkshirehathaway.com/2010-12-31/role/notespayableandotherborrowingsdetail </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns> |
| <Columns> |
| <Id> 21 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Berkshire Hathaway Finance Corporation [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_BerkshireHathawayFinanceCorporationMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Berkshire Hathaway Finance Corporation [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_BerkshireHathawayFinanceCorporationMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> Pure </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/instance </MeasureSchema> |
| <MeasureValue> pure </MeasureValue> |
| <MeasureNamespace> xbrli </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="2" Label="12/31/2010"/> |
| </Labels> |
| </Columns> |
| <Columns> |
| <Id> 22 </Id> |
| <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| <LabelColumn> false </LabelColumn> |
| <CurrencyCode> USD </CurrencyCode> |
| <FootnoteIndexer/> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Berkshire Hathaway Finance Corporation [Member] 12/31/2009 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Pri_2009-12-31_BerkshireHathawayFinanceCorporationMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2009-12-31T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 0001-01-01T00:00:00 </PeriodEndDate> |
| <Segments> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Berkshire Hathaway Finance Corporation [Member] </ValueName> |
| <ValueType> us-gaap_StatementBusinessSegmentsAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_BerkshireHathawayFinanceCorporationMember </Id> |
| <dimensionId> us-gaap_StatementBusinessSegmentsAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| </Segments> |
| <Scenarios/> |
| </contextRef> |
| <UPS> |
| <UnitProperty> |
| <UnitID> USD </UnitID> |
| <UnitType> Standard </UnitType> |
| <StandardMeasure> |
| <MeasureSchema> http://www.xbrl.org/2003/iso4217 </MeasureSchema> |
| <MeasureValue> USD </MeasureValue> |
| <MeasureNamespace> iso4217 </MeasureNamespace> |
| </StandardMeasure> |
| <Scale> 0 </Scale> |
| </UnitProperty> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <Labels> |
| <Label Id="1" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="2" Label="12/31/2009"/> |
| </Labels> |
| </Columns> |
| </OriginalInstanceReportColumns> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType/> |
| | | <SimpleDataType> na </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Berkshire Hathaway Finance Corporation [Member] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 41 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsLineItems </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> duration </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:stringItemType </ElementDataType> |
| | | <SimpleDataType> string </SimpleDataType> |
| | | <ElementDefenition> No definition available. </ElementDefenition> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings [Line Items] </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 42 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_DebtWeightedAverageInterestRate </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt... </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole> terselabel </PreferredLabelRole> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0.042 </NumericAmount> |
| <RoundedNumericAmount> 0.042 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 0 </NumericAmount> |
| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Other </Unit> |
| | | <ElementDataType> us-types:percentItemType </ElementDataType> |
| | | <SimpleDataType> pure </SimpleDataType> |
| | | <ElementDefenition> Reflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of total debt (short and long-term) outstanding by type or by instrument at that time. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Average Interest Rate, percentage </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 43 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NotesPayable </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
| | | <IsReportTitle> false </IsReportTitle> |
| | | <IsSegmentTitle> false </IsSegmentTitle> |
| | | <IsSubReportEnd> false </IsSubReportEnd> |
| | | <IsCalendarTitle> false </IsCalendarTitle> |
| | | <IsTuple> false </IsTuple> |
| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
| | | <IsBeginningBalance> false </IsBeginningBalance> |
| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
| | | <Cells> |
| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 11535000000 </NumericAmount> |
| <RoundedNumericAmount> 11535 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> true </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 2 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 12051000000 </NumericAmount> |
| <RoundedNumericAmount> 12051 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> true </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Notes payable and other borrowings </Label> |
| | | </Row> |
| | </Rows> |
| <Footnotes/> |
| <NumberOfCols> 2 </NumberOfCols> |
| <NumberOfRows> 43 </NumberOfRows> |
| <ReportName> Notes payable and other borrowings (Detail) (USD $) </ReportName> |
| <MonetaryRoundingLevel> Millions </MonetaryRoundingLevel> |
| <SharesRoundingLevel> UnKnown </SharesRoundingLevel> |
| <PerShareRoundingLevel> UnKnown </PerShareRoundingLevel> |
| <ExchangeRateRoundingLevel> UnKnown </ExchangeRateRoundingLevel> |
| <HasCustomUnits> true </HasCustomUnits> |
| <SharesShouldBeRounded> true </SharesShouldBeRounded> |
| </InstanceReport> |