Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
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Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Number of new stock issued during the period.

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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-Paragraph 29, 30
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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Related party transactions and balances (Narrative) (Details) ¥ in Thousands								1 Months Ended		12 Months Ended
	Nov. 20, 2015 USD ($) shares	May. 08, 2015 USD ($) shares	May. 08, 2015 CNY (¥) shares	May. 08, 2015 USD ($) shares	May. 08, 2015 CNY (¥) shares	Dec. 15, 2014 USD ($) shares	Dec. 15, 2014 CNY (¥) shares	May. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2014 CNY (¥)	Dec. 31, 2013 CNY (¥)
Related Party Transaction [Line Items]
Proceeds from the private placement										$ 375,162,000	¥ 2,430,223	¥ 905,590
Private Placement [Member]
Related Party Transaction [Line Items]
Cash consideration of ordinary shares issued \| ¥											3,104,514	891,513
Class A ordinary shares [Member] \| Private Placement [Member]
Related Party Transaction [Line Items]
Number of shares issued	90,909,091	93,750,000	93,750,000			36,812,868	36,812,868
Proceeds from the private placement	$ 500,000,000	$ 400,000,000	¥ 2,445,000			$ 148,000,000	¥ 905,792
Business Cooperation Agreement [Member]
Related Party Transaction [Line Items]
Acquired intangible assets \| ¥			¥ 660,215		¥ 660,215
Share subscription agreement and Business Cooperation Agreement [Member] \| Class A ordinary shares [Member]
Related Party Transaction [Line Items]
Number of shares issued		65,625,000	65,625,000
Cash consideration of ordinary shares issued		$ 250,000,000	¥ 1,528,200
Ctrip [Member]
Related Party Transaction [Line Items]
Online platform and commission fees \| ¥											¥ 3,500	¥ 700
Ctrip [Member] \| Class A ordinary shares [Member] \| Private placement concurrent with initial public offering [Member]
Related Party Transaction [Line Items]
Number of shares issued									5,000,000
Ctrip [Member] \| Class A ordinary shares [Member] \| Private Placement [Member]
Related Party Transaction [Line Items]
Number of shares issued								3,750,000	3,731,034
Proceeds from the private placement \| $								$ 20,000,000	$ 15,000,000
JD [Member] \| Business Cooperation Agreement [Member]
Related Party Transaction [Line Items]
Acquired intangible assets \| ¥			¥ 660,200		¥ 660,200
Estimated useful lives				5 years	5 years
JD [Member] \| Share subscription agreement and Business Cooperation Agreement [Member] \| Class A ordinary shares [Member]
Related Party Transaction [Line Items]
Number of shares issued				65,625,000	65,625,000
Cash consideration of ordinary shares issued				$ 250,000,000	¥ 1,528,200