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Consolidated Statements Of Comprehensive Income (Parenthetical) (Class A Ordinary Shares)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Class A Ordinary Shares
Number of American depositary shares ("ADSs") representing one Class A ordinary share	10bidu_AmericanDepositorySharesToSharesRatio / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	10bidu_AmericanDepositorySharesToSharesRatio / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember	10bidu_AmericanDepositorySharesToSharesRatio / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember

X

- Definition

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

+ References

No definition available.

+ Details

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