Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Finite-Lived Intangible Assets (Detail) In Thousands, unless otherwise specified	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY	Dec. 31, 2010 CNY	Dec. 31, 2011 Land use right USD ($)	Dec. 31, 2011 Land use right CNY	Dec. 31, 2010 Land use right CNY	Dec. 31, 2011 Customer relationships USD ($)	Dec. 31, 2011 Customer relationships CNY	Dec. 31, 2010 Customer relationships CNY	Dec. 31, 2011 Software USD ($)	Dec. 31, 2011 Software CNY	Dec. 31, 2010 Software CNY	Dec. 31, 2011 Trademarks USD ($)	Dec. 31, 2011 Trademarks CNY	Dec. 31, 2010 Trademarks CNY	Dec. 31, 2011 Others USD ($)	Dec. 31, 2011 Others CNY	Dec. 31, 2010 Others CNY	Dec. 31, 2011 User List USD ($)	Dec. 31, 2011 User List CNY
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value		1,037,608	159,190		223,309	97,611		254,169	31,408		44,350	12,131		320,527	1,727		37,183	16,313		158,070
Finite-lived intangible assets, accumulated amortization		(115,967)	(53,802)		(11,252)	(6,995)		(40,168)	(26,870)		(7,465)	(3,572)		(14,567)	(248)		(19,097)	(16,117)		(23,418)
Finite-lived intangible assets, impairment loss		(5,540)			0			(1,031)			(3,424)			0			(1,085)			0
Finite-lived intangible assets, net carrying value	$ 145,554	916,101	105,388	$ 33,692	212,057	90,616	$ 33,838	212,970	4,538	$ 5,316	33,461	8,559	$ 48,612	305,960	1,479	$ 2,702	17,001	196	$ 21,394	134,652