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Summary of Redeemable Noncontrolling Interest (Parenthetical) (Detail) (B.D. Mobile) | 1 Months Ended
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Jul. 13, 2012
B.D. Mobile |
Redeemable Noncontrolling Interest [Line Items] |
Additional percentage of equity interest subscribed by redeemable noncontrolling shareholders | 14.00%

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- Definition Additional percentage of equity interest subscribed by redeemable noncontrolling shareholders + References No definition available. + Details
Name: | bidu_AdditionalMinorityInterestOwnershipPercentageSubscribedByNoncontrollingOwners
Namespace Prefix: | bidu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RedeemableNoncontrollingInterestLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration