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Parent company only condensed financial information (Details 2) | 12 Months Ended
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Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2014 Parent company USD ($) | Dec. 31, 2014 Parent company CNY | Dec. 31, 2013 Parent company CNY | Dec. 31, 2012 Parent company CNY
Operating expenses |  |  |  |  |  |  |  |
Marketing | $ (646,340,000)us-gaap_MarketingExpense | (4,010,280,000)us-gaap_MarketingExpense | (1,590,171,000)us-gaap_MarketingExpense | (1,096,765,000)us-gaap_MarketingExpense | $ (147,545,000)us-gaap_MarketingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (915,455,000)us-gaap_MarketingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
General and administrative | (847,768,000)us-gaap_GeneralAndAdministrativeExpense | (5,260,064,000)us-gaap_GeneralAndAdministrativeExpense | (760,338,000)us-gaap_GeneralAndAdministrativeExpense | (639,097,000)us-gaap_GeneralAndAdministrativeExpense | (618,041,000)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (3,834,699,000)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,065,000)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (18,581,000)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Loss from operations | (935,182,000)us-gaap_OperatingIncomeLoss | (5,802,437,000)us-gaap_OperatingIncomeLoss | (578,827,000)us-gaap_OperatingIncomeLoss | (1,951,098,000)us-gaap_OperatingIncomeLoss | (765,586,000)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,750,154,000)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,065,000)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (18,581,000)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity in loss of subsidiaries and VIEs |  |  |  |  | (72,497,000)jd_IncomeLossFromSubsidiariesAndVariableInterestEntities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (449,816,000)jd_IncomeLossFromSubsidiariesAndVariableInterestEntities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (164,843,000)jd_IncomeLossFromSubsidiariesAndVariableInterestEntities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,750,074,000)jd_IncomeLossFromSubsidiariesAndVariableInterestEntities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest income, net | 102,769,000 us-gaap_InvestmentIncomeInterest | 637,641,000 us-gaap_InvestmentIncomeInterest | 343,770,000 us-gaap_InvestmentIncomeInterest | 175,751,000 us-gaap_InvestmentIncomeInterest | 29,542,000 us-gaap_InvestmentIncomeInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 183,294,000 us-gaap_InvestmentIncomeInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3,987,000 us-gaap_InvestmentIncomeInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 37,190,000 us-gaap_InvestmentIncomeInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Others, net | 34,907,000 us-gaap_OtherNonoperatingIncomeExpense | 216,587,000 us-gaap_OtherNonoperatingIncomeExpense | 193,555,000 us-gaap_OtherNonoperatingIncomeExpense | 60,325,000 us-gaap_OtherNonoperatingIncomeExpense | 3,275,000 us-gaap_OtherNonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 20,318,000 us-gaap_OtherNonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 115,022,000 us-gaap_OtherNonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,992,000 us-gaap_OtherNonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net loss | (805,266,000)us-gaap_NetIncomeLoss | (4,996,358,000)us-gaap_NetIncomeLoss | (49,899,000)us-gaap_NetIncomeLoss | (1,729,473,000)us-gaap_NetIncomeLoss | (805,266,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,996,358,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (49,899,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,729,473,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Preferred shares redemption value accretion | (1,282,539,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment | (7,957,640,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment | (2,435,366,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment | (1,587,454,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment | (1,282,539,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (7,957,640,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,435,366,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,587,454,000)us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net loss attributable to holders of permanent equity securities | (2,087,805,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (12,953,998,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (2,485,265,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (3,316,927,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (2,087,805,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (12,953,998,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,485,265,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (3,316,927,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net loss | (805,266,000)us-gaap_NetIncomeLoss | (4,996,358,000)us-gaap_NetIncomeLoss | (49,899,000)us-gaap_NetIncomeLoss | (1,729,473,000)us-gaap_NetIncomeLoss | (805,266,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,996,358,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (49,899,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,729,473,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other comprehensive loss: |  |  |  |  |  |  |  |
Foreign currency translation adjustments | (19,600,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | (121,612,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | (137,921,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | (7,546,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | (19,600,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (121,612,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (137,921,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (7,546,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net change in unrealized gains on available-for-sale securities: |  |  |  |  |  |  |  |
Unrealized gains, nil of tax | 11,489,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | 71,286,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | 96,501,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax |  | 11,489,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 71,286,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 96,501,000 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Reclassification adjustment for gains included in interest income, nil of tax | (9,216,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax | (57,181,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax | (73,277,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax |  | (9,216,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (57,181,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (73,277,000)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net unrealized gains on available-for-sale securities | 2,273,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent | 14,105,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent | 23,224,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent |  | 2,273,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,105,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 23,224,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Total other comprehensive loss | (17,327,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | (107,507,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | (114,697,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | (7,546,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | (17,327,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (107,507,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (114,697,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (7,546,000)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive loss | (822,593,000)us-gaap_ComprehensiveIncomeNetOfTax | (5,103,865,000)us-gaap_ComprehensiveIncomeNetOfTax | (164,596,000)us-gaap_ComprehensiveIncomeNetOfTax | (1,737,019,000)us-gaap_ComprehensiveIncomeNetOfTax | (822,593,000)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (5,103,865,000)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (164,596,000)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,737,019,000)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Unrealized gains, tax |  | 0 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax | 0 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax | 0 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax |  | 0 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Reclassification adjustment for gains included in "interest income", tax |  | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax |  | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |

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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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