Restricted Net Assets (Narrative) (Details) (Group's subsidiaries, VIEs and subsidiaries of VIE incorporated in PRC [Member]) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014 USD ($)	Dec. 31, 2014 CNY	Dec. 31, 2013 CNY
Schedule of Restricted Net Assets [Line Items]
Portion of after-tax profit to be allocated to general reserve under PRC law (as a percent)	10.00%	10.00%
Required general reserve/registered capital ratio to de-force compulsory net profit allocation to general reserve (as a percent)	50.00%	50.00%
Restricted Net Assets	$ 58.9	365.6	205.8
Whether restricted net assets exceed 25% of consolidated net assets of the Company	No	No

The maximum percentage of the appropriation to the statutory surplus fund over the after-tax profits calculated in accordance with PRC GAAP.

No definition available.

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- Definition

The percentage of the surplus fund over the registered capital of the respective company thus appropriation is not required.

+ References

No definition available.

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- Definition

Whether restricted net assets exceed 25% of consolidated net assets of the Company

+ References

No definition available.

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- Definition

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e)(3)(ii))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Subparagraph 3

-Article 4

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