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| | | <hasScenarios> false </hasScenarios> |
| | | <MCU> |
| <KeyName> {us-gaap_StatementBusinessSegmentsAxis} : Berkshire Hathaway Finance Corporation [Member] {us-gaap_SubsequentEventTypeAxis} : Issuance of Debt [Member] {us-gaap_LongtermDebtTypeAxis} : Floating Rate Senior Notes Due In 2014 [Member] 1/31/2011 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2011-01-31_FloatingRateSeniorNotesDueIn2014Member_BerkshireHathawayFinanceCorporationMember_IssuanceOfDebtMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2011-01-31T00:00:00 </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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Issuance of Debt [Member] </ValueName> |
| <ValueType> us-gaap_SubsequentEventTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_IssuanceOfDebtMember </Id> |
| <dimensionId> us-gaap_SubsequentEventTypeAxis </dimensionId> |
| <type> explicitMember </type> |
| </DimensionInfo> |
| </anyType> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Floating Rate Senior Notes Due In 2014 [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FloatingRateSeniorNotesDueIn2014Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Jan. 31, 2011"/> |
| <Label Id="2" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="3" Label="Issuance of Debt [Member]"/> |
| <Label Id="4" Label="Floating Rate Senior Notes Due In 2014 [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 8 </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] {us-gaap_SubsequentEventTypeAxis} : Repayment of Debt [Member] 1/1/2011 - 1/31/2011 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_1Mos_2011-01-31_BerkshireHathawayFinanceCorporationMember_RepaymentOfDebtMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> duration </PeriodType> |
| <PeriodStartDate> 2011-01-01T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 2011-01-31T00:00:00 </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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Repayment of Debt [Member] </ValueName> |
| <ValueType> us-gaap_SubsequentEventTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_RepaymentOfDebtMember </Id> |
| <dimensionId> us-gaap_SubsequentEventTypeAxis </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="1 Months Ended"/> |
| <Label Id="2" Label="Jan. 31, 2011"/> |
| <Label Id="3" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="4" Label="Repayment of Debt [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 9 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <LabelColumn> false </LabelColumn> |
| | | <CurrencyCode> USD </CurrencyCode> |
| | | <FootnoteIndexer/> |
| | | <hasSegments> true </hasSegments> |
| | | <hasScenarios> false </hasScenarios> |
| | | <MCU> |
| <KeyName> {dei_LegalEntityAxis} : Subsidiaries [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SubsidiariesMember </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> |
| </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, 2010"/> |
| <Label Id="2" Label="Subsidiaries [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 10 </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 11 </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] {us-gaap_LongtermDebtTypeAxis} : Unsecured Debt [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_UnsecuredDebtMember_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Unsecured Debt [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_UnsecuredDebtMember </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Unsecured Debt [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <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] {us-gaap_LongtermDebtTypeAxis} : Floating Rate Notes Due 2011 [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_FloatingRateNotesDue2011Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Floating Rate Notes Due 2011 [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FloatingRateNotesDue2011Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Floating Rate Notes Due 2011 [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <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] {us-gaap_LongtermDebtTypeAxis} : Floating Rate Notes Due 2012 [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_FloatingRateNotesDue2012Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Floating Rate Notes Due 2012 [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FloatingRateNotesDue2012Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Floating Rate Notes Due 2012 [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 14 </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] {us-gaap_LongtermDebtTypeAxis} : Floating Rate Notes Due 2013 [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_FloatingRateNotesDue2013Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Floating Rate Notes Due 2013 [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FloatingRateNotesDue2013Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Floating Rate Notes Due 2013 [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 15 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due 2012 at 1.4% [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_NotesDue2012At1.4Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Notes Due 2012 at 1.4% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDue2012At1.4Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Notes Due 2012 at 1.4% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 16 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due 2013 at 2.125% [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_NotesDue2013At2.125Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Notes Due 2013 at 2.125% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDue2013At2.125Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Notes Due 2013 at 2.125% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 17 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due 2015 at 3.2% [Member] 2/11/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-11_NotesDue2015At3.2Member_InsuranceAndOtherMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-11T00:00:00 </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> Notes Due 2015 at 3.2% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDue2015At3.2Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Feb. 11, 2010"/> |
| <Label Id="2" Label="Insurance and Other [Member]"/> |
| <Label Id="3" Label="Notes Due 2015 at 3.2% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 18 </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Railroad, Utilities and Energy [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 19 </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] 2/12/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_2010-02-12_BurlingtonNorthernSantaFeCorporationMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> instant </PeriodType> |
| <PeriodStartDate> 2010-02-12T00:00:00 </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> |
| </UPS> |
| <CurrencyCode> USD </CurrencyCode> |
| <OriginalCurrencyCode> USD </OriginalCurrencyCode> |
| </MCU> |
| | | <CurrencySymbol> $ </CurrencySymbol> |
| | | <Labels> |
| <Label Id="1" Label="Feb. 12, 2010"/> |
| <Label Id="2" Label="Burlington Northern Santa Fe Corporation [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 20 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due In 2040 at 5.75% [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_NotesDueIn2040At5.75Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Notes Due In 2040 at 5.75% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDueIn2040At5.75Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </dimensionId> |
| <type> explicitMember </type> |
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| </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Burlington Northern Santa Fe Corporation [Member]"/> |
| <Label Id="3" Label="Notes Due In 2040 at 5.75% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 21 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due 2020 at 3.60% [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_NotesDue2020At3.60Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Notes Due 2020 at 3.60% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDue2020At3.60Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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> |
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| <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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Burlington Northern Santa Fe Corporation [Member]"/> |
| <Label Id="3" Label="Notes Due 2020 at 3.60% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 22 </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] {us-gaap_LongtermDebtTypeAxis} : Notes Due 2041 at 5.05% [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_NotesDue2041At5.05Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Notes Due 2041 at 5.05% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_NotesDue2041At5.05Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Burlington Northern Santa Fe Corporation [Member]"/> |
| <Label Id="3" Label="Notes Due 2041 at 5.05% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 23 </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Finance and Financial Products [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 24 </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] {us-gaap_LongtermDebtTypeAxis} : Senior Notes [Member] 1/1/2010 - 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_12mos_20101231_SeniorNotesMember_BerkshireHathawayFinanceCorporationMember </ContextID> |
| <EntitySchema> http://www.sec.gov/CIK </EntitySchema> |
| <EntityValue> 0001067983 </EntityValue> |
| <PeriodDisplayName/> |
| <PeriodType> duration </PeriodType> |
| <PeriodStartDate> 2010-01-01T00:00:00 </PeriodStartDate> |
| <PeriodEndDate> 2010-12-31T00:00:00 </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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Senior Notes [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> us-gaap_SeniorNotesMember </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="12 Months Ended"/> |
| <Label Id="2" Label="Dec. 31, 2010"/> |
| <Label Id="3" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="4" Label="Senior Notes [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 25 </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] {us-gaap_LongtermDebtTypeAxis} : Senior Notes Due In 2040 at 5.75% [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SeniorNotesDueIn2040At5.75Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Senior Notes Due In 2040 at 5.75% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_SeniorNotesDueIn2040At5.75Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="3" Label="Senior Notes Due In 2040 at 5.75% [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 26 </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] {us-gaap_LongtermDebtTypeAxis} : Floating Rate Notes Due In 2012 [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_FloatingRateNotesDueIn2012Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Floating Rate Notes Due In 2012 [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_FloatingRateNotesDueIn2012Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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, 2010"/> |
| <Label Id="2" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="3" Label="Floating Rate Notes Due In 2012 [Member]"/> |
| </Labels> |
| | | </Column> |
| | <Column> |
| | | <Id> 27 </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] {us-gaap_LongtermDebtTypeAxis} : Senior Notes Due In 2015 at 2.45% [Member] 12/31/2010 USD ($) </KeyName> |
| <CurrencySymbol> $ </CurrencySymbol> |
| <contextRef> |
| <ContextID> Cur_20101231_SeniorNotesDueIn2015At2.45Member_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> |
| <anyType xsi:type="Segment"> |
| <IsDefaultForEntity> false </IsDefaultForEntity> |
| <Name/> |
| <IsFromEntityGroup> false </IsFromEntityGroup> |
| <ValueName> Senior Notes Due In 2015 at 2.45% [Member] </ValueName> |
| <ValueType> us-gaap_LongtermDebtTypeAxis </ValueType> |
| <Namespace> xbrldi </Namespace> |
| <Schema> http://xbrl.org/2006/xbrldi </Schema> |
| <DimensionInfo> |
| <Id> brka_SeniorNotesDueIn2015At2.45Member </Id> |
| <dimensionId> us-gaap_LongtermDebtTypeAxis </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="Dec. 31, 2010"/> |
| <Label Id="2" Label="Berkshire Hathaway Finance Corporation [Member]"/> |
| <Label Id="3" Label="Senior Notes Due In 2015 at 2.45% [Member]"/> |
| </Labels> |
| | | </Column> |
| | </Columns> |
| <Rows> |
| | <Row> |
| | | <Id> 2 </Id> |
| | | <IsAbstractGroupTitle> true </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_NotesPayableAndOtherBorrowingsNarrativeLineItems </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> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
| <Id> 3 </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> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| <Cell> |
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| | | <ElementDefenition> No definition available. </ElementDefenition> |
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| | | <Label> Notes payable and other borrowings narrative [Line Items] </Label> |
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| | <Row> |
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| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_DebtInstrumentFaceAmount </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
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| | | <IsSubReportEnd> false </IsSubReportEnd> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
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| | | <FootnoteIndexer/> |
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| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Par amount of debt </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 4 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_RepaymentsOfLongTermDebt </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </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> |
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| </Cell> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> true </hasSegments> |
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| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> true </hasSegments> |
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| <IsIndependantCurrency> false </IsIndependantCurrency> |
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| <hasSegments> true </hasSegments> |
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| <Id> 24 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 2000000000 </NumericAmount> |
| <RoundedNumericAmount> 2000000000 </RoundedNumericAmount> |
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| <NonNumericTextHeader/> |
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| <IsIndependantCurrency> false </IsIndependantCurrency> |
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| </Cell> |
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| <Id> 27 </Id> |
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| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
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| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Repayment of debt </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 5 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_DebtInstrumentInterestRateStatedPercentage </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> na </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> |
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| <IsNumeric> false </IsNumeric> |
| <IsRatio> true </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
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| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
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| <hasSegments> true </hasSegments> |
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| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> true </hasSegments> |
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| | | <Unit> Monetary </Unit> |
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| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of long-term debt maturing within the remaining months in the current calendar year-end following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
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| | | <Label> Principal payments on debt - 2011 </Label> |
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| | | <ElementName> brka_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoOfCalendarYearEnd </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
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| | | <PeriodType> instant </PeriodType> |
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| <NonNumericTextHeader/> |
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| <IsRatio> false </IsRatio> |
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| <RoundedNumericAmount> 0 </RoundedNumericAmount> |
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| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> true </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of long-term debt maturing in year two of the calendar year-end following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Principal payments on debt - 2012 </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 8 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> brka_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeOfCalendarYearEnd </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Amount of long-term debt maturing in year three of the calendar year-end following the date of the latest balance sheet... </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> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 7468000000 </NumericAmount> |
| <RoundedNumericAmount> 7468000000 </RoundedNumericAmount> |
| <NonNumbericText/> |
| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
| <IsIndependantCurrency> false </IsIndependantCurrency> |
| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
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| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
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| <ShowCurrencySymbol> false </ShowCurrencySymbol> |
| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
| <hasSegments> true </hasSegments> |
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| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
| <DisplayZeroAsNone> false </DisplayZeroAsNone> |
| <NumericAmount> 2706000000 </NumericAmount> |
| <RoundedNumericAmount> 2706000000 </RoundedNumericAmount> |
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| <NonNumericTextHeader/> |
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| <DisplayDateInUSFormat> false </DisplayDateInUSFormat> |
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| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of long-term debt maturing in year three of the calendar year-end following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
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| | | <Unit> Monetary </Unit> |
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| | | <ElementDefenition> Amount of long-term debt maturing in year four of the calendar year-end following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
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| | | <Label> Principal payments on debt - 2014 </Label> |
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| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of long-term debt maturing in year five of the calendar year-end following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Principal payments on debt - 2015 </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 11 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity </ElementName> |
| | | <ElementPrefix> us-gaap </ElementPrefix> |
| | | <IsBaseElement> true </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> No definition available. </ShortDefinition> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
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| </Cell> |
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| <Id> 27 </Id> |
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| <IsRatio> false </IsRatio> |
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| <hasSegments> true </hasSegments> |
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| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Unused lines of credit available </Label> |
| | | </Row> |
| | <Row> |
| | | <Id> 12 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed </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> false </IsNumeric> |
| <IsRatio> false </IsRatio> |
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| <hasScenarios> false </hasScenarios> |
| </Cell> |
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| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. </ElementDefenition> |
| | | <ElementReferences> Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Acquiree's debt assumed </Label> |
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| | | <ElementName> brka_NewAccountingPronouncementEffectOfChangeOnBalanceSheet </ElementName> |
| | | <ElementPrefix> brka </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Amount of the effect of adoption of a new accounting pronouncement. </ShortDefinition> |
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| | | <IsSubReportEnd> false </IsSubReportEnd> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
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| </Cell> |
| </Cells> |
| | | <OriginalInstanceReportColumns/> |
| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Amount of the effect of adoption of a new accounting pronouncement. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> New accounting pronouncement effect of change on balance sheet </Label> |
| | | </Row> |
| | </Rows> |
| <Footnotes/> |
| <NumberOfCols> 27 </NumberOfCols> |
| <NumberOfRows> 12 </NumberOfRows> |
| <ReportName> Notes payable and other borrowings - Narrative (Detail) (USD $) </ReportName> |
| <MonetaryRoundingLevel> NoRounding </MonetaryRoundingLevel> |
| <SharesRoundingLevel> UnKnown </SharesRoundingLevel> |
| <PerShareRoundingLevel> UnKnown </PerShareRoundingLevel> |
| <ExchangeRateRoundingLevel> UnKnown </ExchangeRateRoundingLevel> |
| <HasCustomUnits> true </HasCustomUnits> |
| <SharesShouldBeRounded> true </SharesShouldBeRounded> |
| </InstanceReport> |