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Ordinary Shares (Details) (USD $)
 1 Months Ended 12 Months Ended
Mar. 31, 2014
May 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Ordinary Shares        
Ordinary shares, par value (in dollars per share)     0.00002us-gaap_CommonStockParOrStatedValuePerShare $ 0.00002us-gaap_CommonStockParOrStatedValuePerShare
Ordinary shares reserved for issuance     563,842,725us-gaap_CommonStockCapitalSharesReservedForFutureIssuance 59,786,401us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
RSUs and share options        
Ordinary Shares        
Ordinary shares reserved for issuance     54,093,176us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_AwardTypeAxis
= jd_RestrictedStockAndStockOptionMember		 59,786,401us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_AwardTypeAxis
= jd_RestrictedStockAndStockOptionMember
Ordinary shares | Huang River Investment Limited        
Ordinary Shares        
Ordinary shares issued 351,678,637us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ dei_LegalEntityAxis
= jd_HuangRiverInvestmentLimitedMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember		      
Common Class A        
Ordinary Shares        
Ordinary shares issued   166,120,400us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		    
Common Class A | Private Placement        
Ordinary Shares        
Ordinary shares issued     139,493,960us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember		  
Preferred Shares        
Ordinary Shares        
Ordinary shares reserved for issuance     509,749,549us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember