Number of arrangers.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The percentage points of benchmark one-year lending rate published by the People's Bank of China to compute annual interest rate.

+ References

No definition available.

+ Details

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- Definition

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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- Definition

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

+ References

+ Details

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- 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

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- 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=64837297&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=64837297&loc=SL5579245-113959

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- 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 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 2: 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

Reference 3: 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

+ Details

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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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=bidu_ChinaMerchantBankShanghaiBranchMember
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- Details

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- Details

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Name:	us-gaap_DebtInstrumentAxis=bidu_ChinaMerchantsBankBeijingBranchMember
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- Details

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Name:	us-gaap_CreditFacilityAxis=bidu_CreditFacilityOneMember
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Name:	us-gaap_DebtInstrumentAxis=bidu_BankOfChinaMember
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Name:	us-gaap_LongtermDebtTypeAxis=bidu_UnsecuredDebtOneMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=bidu_SumitomoMitsuiBankLoanMember
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- Details

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Loans Payable - Additional Information (Detail) ¥ in Thousands, $ in Thousands																	2 Months Ended
	Dec. 19, 2016 USD ($)	Dec. 14, 2016 USD ($)	Nov. 17, 2016 USD ($)	Sep. 23, 2016 USD ($)	Aug. 16, 2016 USD ($)	Aug. 12, 2016 USD ($)	Aug. 08, 2016 USD ($)	Jul. 19, 2016 USD ($)	Jul. 11, 2016 USD ($)	Jun. 08, 2016 USD ($) Person	Feb. 26, 2016 USD ($)	Jan. 29, 2016 USD ($)	Sep. 30, 2015 USD ($)	Aug. 28, 2015 USD ($)	Aug. 10, 2015 USD ($)	Dec. 09, 2014 USD ($) Agreement Loan	Dec. 31, 2015 USD ($)	Dec. 19, 2016 CNY (¥)	Dec. 14, 2016 CNY (¥)	Dec. 09, 2016 USD ($)	Dec. 09, 2016 CNY (¥)	Nov. 26, 2016 USD ($)	Nov. 26, 2016 CNY (¥)	Nov. 25, 2016 USD ($)	Nov. 25, 2016 CNY (¥)	Nov. 17, 2016 CNY (¥)	Sep. 23, 2016 CNY (¥)	Aug. 16, 2016 CNY (¥)	Aug. 12, 2016 CNY (¥)	Aug. 08, 2016 CNY (¥)	Jul. 19, 2016 CNY (¥)	Jul. 11, 2016 CNY (¥)	Jun. 22, 2016 USD ($)	Jun. 22, 2016 CNY (¥)	Jun. 08, 2016 CNY (¥)	Feb. 26, 2016 CNY (¥)	Jan. 29, 2016 CNY (¥)	Jan. 22, 2016 USD ($)	Jan. 22, 2016 CNY (¥)	Dec. 31, 2015 CNY (¥)	Sep. 30, 2015 CNY (¥)	Sep. 22, 2015 USD ($)	Sep. 22, 2015 CNY (¥)	Aug. 28, 2015 CNY (¥)	Aug. 25, 2015 USD ($)	Aug. 25, 2015 CNY (¥)	Aug. 10, 2015 CNY (¥)	Jul. 17, 2015 USD ($)	Jul. 17, 2015 CNY (¥)	Dec. 09, 2014 CNY (¥) Agreement Loan
Debt Instrument [Line Items]
Number of arrangers \| Person										21
China Merchant Bank (Shanghai Branch) \| Loan 1
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan																																										$ 14,400	¥ 100,000
Amount borrowed under the commitment of a bank loan													$ 1,430				$ 12,980																							¥ 90,100	¥ 9,900
Annual interest rate													4.60%				4.35%																							4.35%	4.60%
Bank loan maturity period													1 year				1 year
China Merchant Bank (Shanghai Branch) \| Loan 2
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan	$ 12,240																	¥ 85,000
Amount borrowed under the commitment of a bank loan	$ 12,240																	¥ 85,000
Annual interest rate	4.18%																	4.18%
Bank loan maturity period	1 year
China Merchants Bank (Beijing Branch)
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan									$ 28,810																							¥ 200,000
Amount borrowed under the commitment of a bank loan							$ 11,520	$ 7,200																						¥ 80,000	¥ 50,000
Annual interest rate							4.35%	4.35%																						4.35%	4.35%
Bank loan maturity period							1 year	1 year
China Merchants Bank (Beijing Branch) \| Loans Borrowed by iQiyi
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan																																						$ 28,810	¥ 200,000
Amount borrowed under the commitment of a bank loan		$ 3,720									$ 2,950	$ 7,730							¥ 25,800																	¥ 20,500	¥ 53,700
Annual interest rate		4.13%									4.13%	4.13%							4.13%																	4.13%	4.13%
Bank loan maturity period		1 year									1 year	1 year
The percentage points of benchmark one-year lending rate published by the People's Bank of China to compute annual interest rate																																						95.00%	95.00%
China Citic Bank (Chongqing Branch) \| Loan 1
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan									$ 21,600																							¥ 150,000
Amount borrowed under the commitment of a bank loan				$ 21,600																							¥ 150,000
Annual interest rate				4.78%																							4.78%
Bank loan maturity period				1 year
The percentage points added to LIBOR to compute the floating interest rate per annum									0.485%
China Citic Bank (Chongqing Branch) \| Loan 1 \| Banking Facility Agreement One
Debt Instrument [Line Items]
Interest rate terms									Loan Prime Rate ("LPR") plus 48.50 basis points
China Citic Bank (Chongqing Branch) \| Loan 2
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan						$ 21,600																							¥ 150,000
Amount borrowed under the commitment of a bank loan					$ 21,600																							¥ 150,000
Annual interest rate					4.56%																							4.56%
Bank loan maturity period					1 year
The percentage points added to LIBOR to compute the floating interest rate per annum						0.2675%
China Citic Bank (Chongqing Branch) \| Loan 2 \| Banking Facility Agreement Two
Debt Instrument [Line Items]
Interest rate terms						LPR plus 26.75 basis points
Bank of China
Debt Instrument [Line Items]
Number of loan agreements																2																																		2
Number of unsecured loan \| Loan																2																																		2
Number of interest rate swap agreements																2																																		2
Bank of China \| Unsecured Loan 1
Debt Instrument [Line Items]
Amount borrowed under the commitment of a bank loan																$ 150,000																																		¥ 1,040,000
Annual interest rate																2.31%																																		2.31%
Bank loan maturity period																2 years
Bank of China \| Unsecured Loan 2
Debt Instrument [Line Items]
Amount borrowed under the commitment of a bank loan																$ 150,000																																		¥ 1,040,000
Annual interest rate																2.45%																																		2.45%
Bank loan maturity period																3 years
Sumitomo Mitsui Bank Loan
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan																																																$ 150,000	¥ 1,040,000
Amount borrowed under the commitment of a bank loan															$ 150,000																																¥ 1,040,000
Annual interest rate															1.41%																																1.41%
Bank loan maturity period															2 years
HSBC Bank Loan
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan																																													$ 200,000	¥ 1,390,000
Amount borrowed under the commitment of a bank loan														$ 200,000																														¥ 1,390,000
Annual interest rate																																													1.42%	1.42%
Bank loan maturity period														2 years
A Group Of 21 Arrangers \| Unsecured Loan 1
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan										$ 1,000,000																									¥ 6,940,000
Amount borrowed under the commitment of a bank loan																						$ 250,000	¥ 1,740,000	$ 250,000	¥ 1,740,000								$ 500,000	¥ 3,460,000
Annual interest rate																						2.78%	2.78%	2.10%	2.10%								2.11%	2.11%
Bank loan maturity period										5 years
A Group Of 21 Arrangers \| Unsecured Loan 2
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan										$ 1,000,000																									¥ 6,940,000
Bank loan maturity period										5 years
International Finance Corporation
Debt Instrument [Line Items]
Specific amount up to which borrowings can be made under the commitment of a bank loan			$ 72,010																							¥ 500,000
Amount borrowed under the commitment of a bank loan																				$ 72,010	¥ 500,000
Annual interest rate																				4.92%	4.92%
Bank loan maturity period			1 year