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LOANS PAYABLE - Short-Term Loan - Additional Information (Detail) (Baidu Holdings, Secured Debt) In Millions, unless otherwise specified	1 Months Ended
	Jan. 11, 2011 USD ($)	Jan. 11, 2011 CNY	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan	$ 30.00	188.82
The percentage points added to LIBOR to compute the floating interest rate per annum	1.50%	1.50%
Period within which a specific amount can be borrowed under the commitment of a bank loan (in months or years)	12 months	12 months
Amount borrowed under the commitment of a bank loan			$ 20.00	125.88

X

- Definition

The period within which a specific amount can be borrowed under a contractual arrangement with the lender.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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