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| | | <PeriodType> instant </PeriodType> |
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| | | <IsEquityPrevioslyReportedAsRow> false </IsEquityPrevioslyReportedAsRow> |
| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
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| | | <FootnoteIndexer/> |
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| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Auction rate securities, weighted-average interest rate </Label> |
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| | | <Id> 10 </Id> |
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| | | <ElementName> goog_AdjustmentPointsCurrentMarketConditions </ElementName> |
| | | <ElementPrefix> goog </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Maximum adjustment points applied to reflect the current market conditions for instruments with similar credit quality at the... </ShortDefinition> |
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| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
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| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
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| <NonNumericTextHeader/> |
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| <CurrencyCode/> |
| <CurrencySymbol/> |
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| <Cell> |
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| </Cell> |
| </Cells> |
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| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:integerItemType </ElementDataType> |
| | | <SimpleDataType> integer </SimpleDataType> |
| | | <ElementDefenition> Maximum adjustment points applied to reflect the current market conditions for instruments with similar credit quality at the date of the valuation. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
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| | | <IsEPS> false </IsEPS> |
| | | <Label> Maximum basis points applied to reflect the current market conditions </Label> |
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| | <Row> |
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| | | <ElementName> goog_AdjustmentPointsLackOfActiveMarket </ElementName> |
| | | <ElementPrefix> goog </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> na </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Maximum adjustment points applied to reflect a discount for the liquidity risk due to the lack of an active market. </ShortDefinition> |
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| | | <IsEquityAdjustmentRow> false </IsEquityAdjustmentRow> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
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| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
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| <NumericAmount> 400 </NumericAmount> |
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| <NonNumericTextHeader/> |
| <FootnoteIndexer/> |
| <CurrencyCode/> |
| <CurrencySymbol/> |
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| <Cell> |
| <Id> 2 </Id> |
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| <NonNumericTextHeader/> |
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| <CurrencySymbol/> |
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| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
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| | | <Unit> Other </Unit> |
| | | <ElementDataType> xbrli:integerItemType </ElementDataType> |
| | | <SimpleDataType> integer </SimpleDataType> |
| | | <ElementDefenition> Maximum adjustment points applied to reflect a discount for the liquidity risk due to the lack of an active market. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Maximum basis points applied to reflect the risk in the marketplace </Label> |
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| | <Row> |
| | | <Id> 12 </Id> |
| | | <IsAbstractGroupTitle> false </IsAbstractGroupTitle> |
| | | <Level> 0 </Level> |
| | | <ElementName> goog_AuctionRateSecuritiesUnrealizedLoss </ElementName> |
| | | <ElementPrefix> goog </ElementPrefix> |
| | | <IsBaseElement> false </IsBaseElement> |
| | | <BalanceType> credit </BalanceType> |
| | | <PeriodType> instant </PeriodType> |
| | | <ShortDefinition> Unrealized loss as of balance sheet date for auction rate securities. </ShortDefinition> |
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| | | <IsEndingBalance> false </IsEndingBalance> |
| | | <IsReverseSign> false </IsReverseSign> |
| | | <PreferredLabelRole/> |
| | | <FootnoteIndexer/> |
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| <Cell> |
| <Id> 1 </Id> |
| <IsNumeric> true </IsNumeric> |
| <IsRatio> false </IsRatio> |
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| <NonNumericTextHeader/> |
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| <CurrencyCode/> |
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| <Cell> |
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| <hasSegments> false </hasSegments> |
| <hasScenarios> false </hasScenarios> |
| </Cell> |
| </Cells> |
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| | | <Unit> Monetary </Unit> |
| | | <ElementDataType> xbrli:monetaryItemType </ElementDataType> |
| | | <SimpleDataType> monetary </SimpleDataType> |
| | | <ElementDefenition> Unrealized loss as of balance sheet date for auction rate securities. </ElementDefenition> |
| | | <ElementReferences> No authoritative reference available. </ElementReferences> |
| | | <IsTotalLabel> false </IsTotalLabel> |
| | | <IsEPS> false </IsEPS> |
| | | <Label> Auction rate securities, unrealized loss </Label> |
| | | </Row> |
| | </Rows> |
| <Footnotes/> |
| <NumberOfCols> 2 </NumberOfCols> |
| <NumberOfRows> 9 </NumberOfRows> |
| <ReportName> Cash and Investments - Additional Information (Detail) (USD $) </ReportName> |
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| <SharesRoundingLevel> UnKnown </SharesRoundingLevel> |
| <PerShareRoundingLevel> UnKnown </PerShareRoundingLevel> |
| <ExchangeRateRoundingLevel> UnKnown </ExchangeRateRoundingLevel> |
| <HasCustomUnits> true </HasCustomUnits> |
| <SharesShouldBeRounded> true </SharesShouldBeRounded> |
| </InstanceReport> |