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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2011
Retained Earnings | The reserves are not allowed to be transferred to the Company in terms of cash dividends, loans or advances, nor are they allowed for distribution except under liquidation.
|  | December 31, |
|  | 2010 |  |  | 2011 |  |  | 2011 |
|  | RMB |  |  | RMB |  |  | US$ |
|  | (In thousands) |
PRC statutory reserve funds |  |  | 238,107 |  |  |  | 249,880 |  |  |  | 39,702 |
Unreserved retained earnings |  |  | 6,727,590 |  |  |  | 13,354,454 |  |  |  | 2,121,809 |
|  |  | 6,965,697 |  |  |  | 13,604,334 |  |  |  | 2,161,511 |

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- Definition Tabular disclosure of the cumulative amount of the reporting entity's undistributed earnings or deficit which is classified into two parts: PRC statutory reserve funds and Unreserved retained earnings, the former of which are not allowed to be transferred to the Entity in terms of cash dividends, loans or advances, nor are they allowed for distribution except under liquidation. + References No definition available. + Details
Name: | bidu_RetainedEarningsAccumulatedDeficitTableTextBlock
Namespace Prefix: | bidu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration