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Business Combinations	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Business Combinations	3.    BUSINESS COMBINATIONS The total purchase consideration for business combinations were RMB332 million, nil and RMB721 million (US$111 million) for the years ended December 31, 2015, 2016 and 2017, respectively. The Company expected to complement its existing businesses and achieve significant synergies from such acquisitions. The acquired entities were considered insignificant, both individually and in aggregate. The results of the acquired entities’ operations have been included in the Company’s consolidated financial statements since their respective dates of acquisition. Neither the results of operations since the acquisition dates nor the pro forma results of operations of the acquirees were presented because the effects of these business combinations, both individually and in aggregate, were not significant to the Company’s consolidated results of operations.

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- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-URI http://asc.fasb.org/topic&trid=2303972

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- References

No definition available.

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