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Convertible Senior Notes (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
Nov. 03, 2014
Nov. 02, 2014
Mar. 17, 2014
ADS        
Convertible Senior Notes        
ADS ratio to ordinary shares   5dei_EntityListingDepositoryReceiptRatio
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
0.20dei_EntityListingDepositoryReceiptRatio
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
 
Ordinary shares, par value       $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
Notes        
Convertible Senior Notes        
Aggregate principal amount of convertible notes       $ 632,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Interest rate (as a percent) 1.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
    1.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Redemption price due to fundamental change as percentage of principal amount 100.00%vips_LongTermDebtRedemptionPriceDueToFundamentalChangeAsPercentageOfPrincipalAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Discounts to initial purchaser 14,231,250us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Debt issuance costs $ 1,078,091us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Notes | ADS        
Convertible Senior Notes        
ADS ratio to ordinary shares       2dei_EntityListingDepositoryReceiptRatio
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
Conversion ratio   49.693us-gaap_DebtInstrumentConvertibleConversionRatio1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
   
Conversion price per $1,000 of principal amount $ 201.24us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember
$ 20.124us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_StatementClassOfStockAxis
= vips_AmericanDepositarySharesMember