The number of loan agreements the company enters into with the bank.

No definition available.

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Namespace Prefix:	bidu_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of unsecured loans the company is entitled to borrow from the bank.

+ References

No definition available.

+ Details

Name:	bidu_NumberOfUnsecuredLoan
Namespace Prefix:	bidu_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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 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

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

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Loans Payable - Additional Information (Detail) In Millions, unless otherwise specified	0 Months Ended												0 Months Ended							0 Months Ended						0 Months Ended			0 Months Ended
	Aug. 19, 2013 ANZ Bank Loan	Oct. 17, 2012 ANZ Bank Loan	Aug. 19, 2013 ANZ Bank Loan USD ($)	Aug. 19, 2013 ANZ Bank Loan AUD	Aug. 19, 2013 ANZ Bank Loan CNY	Aug. 13, 2013 ANZ Bank Loan AUD	Aug. 13, 2013 ANZ Bank Loan CNY	Oct. 17, 2012 ANZ Bank Loan USD ($)	Oct. 17, 2012 ANZ Bank Loan AUD	Oct. 17, 2012 ANZ Bank Loan CNY	Sep. 18, 2012 ANZ Bank Loan AUD	Sep. 18, 2012 ANZ Bank Loan CNY	May 13, 2014 HSBC Bank Loan	Sep. 25, 2014 HSBC Bank Loan USD ($)	Sep. 25, 2014 HSBC Bank Loan CNY	May 23, 2014 HSBC Bank Loan USD ($)	May 23, 2014 HSBC Bank Loan CNY	May 13, 2014 HSBC Bank Loan USD ($)	May 13, 2014 HSBC Bank Loan CNY	Jul. 29, 2013 Sumitomo Mitsui Bank Loan	Jul. 29, 2013 Sumitomo Mitsui Bank Loan USD ($)	Jul. 29, 2013 Sumitomo Mitsui Bank Loan CNY	Jul. 24, 2013 Sumitomo Mitsui Bank Loan USD ($)	Jul. 24, 2013 Sumitomo Mitsui Bank Loan CNY	Dec. 09, 2014 Bank of China Agreement Loan	Dec. 09, 2014 Bank of China Unsecured Loan 1	Dec. 09, 2014 Bank of China Unsecured Loan 1 USD ($)	Dec. 09, 2014 Bank of China Unsecured Loan 1 CNY	Dec. 09, 2014 Bank of China Unsecured Loan 2	Dec. 09, 2014 Bank of China Unsecured Loan 2 USD ($)	Dec. 09, 2014 Bank of China Unsecured Loan 2 CNY
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan						235.00	1,190.00				105.00	532.46						$ 20.00	124.09				$ 150.00	930.69
The percentage points added to LIBOR to compute the floating interest rate per annum													0.80%
Amount borrowed under the commitment of a bank loan				235.00	1,190.00				55.00	278.91				8.00	49.60	7.00	43.40				150.00	930.69					150.00	930.69		150.00	930.69
Annual interest rate			1.65%	1.65%	1.65%			2.75%	2.75%	2.75%				1.13%	1.13%	1.12%	1.12%				1.17%	1.17%					2.31%	2.31%		2.45%	2.45%
Loan commitment amount cancelled									50.00
Unsecured loan borrowed			$ 200.00					$ 56.76
Unsecured loan, maturity period (in years)	2 years	2 years																		2 years						2 years			3 years
Number of loan agreements																									2
Number of unsecured loan																									2
Number of interest rate swap agreements																									2