Future Minimum Lease Payments For Non-Cancelable Agreements For Licensed Copyrights and Produced Content (Detail) - Dec. 31, 2022 - Licensed copyrights ¥ in Millions, $ in Millions	CNY (¥)	USD ($)
Commitment And Contingencies [Line Items]
2023	¥ 5,156	$ 748
2024	3,622	525
2025	2,636	382
2026	1,261	183
2027	105	15
Thereafter	202	29
Future Minimum Payments For Noncancelable Licensed Copyrights and Produced Content fees	¥ 12,982	$ 1,882

Commitment And Contingencies [Line Items]

No definition available.

Name:	bidu_CommitmentAndContingenciesLineItems
Namespace Prefix:	bidu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements after fifth fiscal year following current fiscal year.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements in second fiscal year following current fiscal year.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements in third fiscal year following current fiscal year.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements in fifth year following current fiscal year.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements in fourth fiscal year following current fiscal year.

No definition available.

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

Future minimum payments for non cancelable Licensed Copyrights and Produced Content agreements in next fiscal year following current fiscal year.

No definition available.

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

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CopyrightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: