Interim Condensed Consolidated Statements Of Comprehensive Income (Parenthetical)	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Class A Ordinary Shares
Number of American depositary shares (ADSs) representing one Class A ordinary share	10	10

The number of American Depositary Shares ("ADSs") that represents one Class A ordinary share.

No definition available.

Name:	bidu_AmericanDepositorySharesToSharesRatio
Namespace Prefix:	bidu_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration