The amount of accumulated impairment loss as the reporting date resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value.

No definition available.

+ Details

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Namespace Prefix:	bidu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Gross carrying amounts as of the balance sheet date of intangible assets, excluding goodwill, having a projected indefinite period of benefit.

+ References

No definition available.

+ Details

Name:	bidu_IndefiniteLivedIntangibleAssetsGrossExcludingGoodwill
Namespace Prefix:	bidu_
Data Type:	xbrli:monetaryItemType
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- Definition

Carrying amount of intangible assets, excluding goodwill, which have a projected indefinite period of benefit (hence are not amortized), allocated to the reportable segment. These assets, acquired either individually or as part of a group of assets, in either an asset acquisition or business combination, are assessed at least annually for impairment. Examples may include trade secrets, contractual rights, trade names, and licensing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

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

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Namespace Prefix:	us-gaap_
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- Definition

Sum of the carrying amounts (original costs for current and prior period additions adjusted for impairment, if any) as of the balance sheet date of intangible assets, excluding goodwill, having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 (b)

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

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Period Type:	instant

Indefinite-Lived Intangible Assets (Detail) In Thousands, unless otherwise specified	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY	Dec. 31, 2010 CNY	Dec. 31, 2011 Domain names USD ($)	Dec. 31, 2011 Domain names CNY	Dec. 31, 2010 Domain names CNY	Dec. 31, 2011 Trademarks USD ($)	Dec. 31, 2011 Trademarks CNY	Dec. 31, 2010 Trademarks CNY	Dec. 31, 2011 License USD ($)	Dec. 31, 2011 License CNY	Dec. 31, 2010 License CNY
Indefinite-lived intangible assets				$ 1,487	9,360	9,360	$ 564	3,550	1,050	$ 318	2,000	0
Indefinite-lived intangible assets, gross	2,369	14,910	10,410
Impairment loss	(397)	(2,500)	0
Indefinite-lived intangible assets	$ 1,972	12,410	10,410