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Fair Value Measurement (Tables) | 12 Months Ended
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Dec. 31, 2012
Fair Value Disclosure And Measurement | Assets measured or disclosed at fair value are summarized below (in thousands):
|  |  |  |  | Fair value measurement or disclosure at December 31, 2011 using |  |  |  |
|  | Total fair value at December 31, 2011 |  |  | Quoted prices in active markets for identical assets (Level 1) |  |  | Significant other observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |  |  | Total Losses |
|  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |
Fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Time deposits |  |  | 2,419,726 |  |  |  |  |  |  |  | 2,419,726 |  |  |  |  |  |  |  |  |
Money market fund |  |  | 192,324 |  |  |  | 192,324 |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate investments |  |  | 9,834,275 |  |  |  |  |  |  |  | 9,834,275 |  |  |  |  |  |  |  |  |
Adjustable-rate investments |  |  | 100,027 |  |  |  |  |  |  |  | 100,027 |  |  |  |  |  |  |  |  |
Fair value measurement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recurring |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustable-rate investments |  |  | 102,682 |  |  |  |  |  |  |  | 102,682 |  |  |  |  |  |  |  |  |
Nonrecurring |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term investments |  |  | — |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  | (47,886 | )
Intangible assets |  |  | — |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  | (8,040 | )
Goodwill |  |  | — |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  | (113,011 | )
Total assets measured at fair value |  |  | 102,682 |  |  |  | — |  |  |  | 102,682 |  |  |  | — |  |  |  | (168,937 | )
|  |  |  |  | Fair value measurement or disclosure at December 31, 2012 using |  |  |  |
|  | Total fair value at December 31, 2012 |  |  | Quoted prices in active markets for identical assets (Level 1) |  |  | Significant other observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |  |  | Total losses |
|  | RMB |  |  | US$ |  |  | RMB |  |  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Fair value disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Time deposits |  |  | 3,034,443 |  |  |  | 487,062 |  |  |  |  |  |  |  | 3,034,443 |  |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  |  | 4,854,278 |  |  |  | 779,165 |  |  |  | 4,854,278 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate investments |  |  | 17,086,252 |  |  |  | 2,742,533 |  |  |  |  |  |  |  | 17,086,252 |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate held-to-maturity investments |  |  | 514,614 |  |  |  | 82,601 |  |  |  |  |  |  |  | 514,614 |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term notes payable |  |  | 9,420,285 |  |  |  | 1,512,060 |  |  |  | 9,420,285 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value measurement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recurring |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities Fixed-rate investments |  |  | 3,514,399 |  |  |  | 564,100 |  |  |  |  |  |  |  | 3,514,399 |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustable-rate investments |  |  | 17,073 |  |  |  | 2,740 |  |  |  |  |  |  |  | 17,073 |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recurring |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term investments |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  | (169,180 | ) |  |  | (27,155 | )
Total assets measured at fair value |  |  | 3,531,472 |  |  |  | 566,840 |  |  |  | — |  |  |  | 3,531,472 |  |  |  | — |  |  |  | (169,180 | ) |  |  | (27,155 | )

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- Definition Tabular disclosure of assets measured or disclosed at fair value. + References No definition available. + Details
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Namespace Prefix: | bidu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration