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Reconciliation of Net Income to Numerator for Computation of Basic and Diluted Net Income per Share (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥)
Net Income (Loss) Available to Common Stockholders, Basic [Abstract] |  |  |  |
Net income attributable to Baidu, Inc. | $ 1,675,395 | ¥ 11,632,269 | ¥ 33,664,173 | ¥ 13,196,932
Accretion of the redeemable noncontrolling interests | (80,357) | (557,918) | (329,180) | (52,683)
Numerator for EPS computation | $ 1,595,038 | ¥ 11,074,351 | ¥ 33,334,993 | ¥ 13,144,249

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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1377-109256 + Details
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