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Summary of Estimated Fair Values of Assets Acquired, Liabilities Assumed and Noncontrolling Interest (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2016 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥) | Jun. 30, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥) | Dec. 31, 2013 CNY (¥)
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Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill | $ 2,209,721 | ¥ 15,342,096 | ¥ 15,395,573 | ¥ 17,688,574 | ¥ 17,418,895 | ¥ 16,864,350
Business Acquisitions 2014 |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase consideration |  |  |  |  | 398,410 |
Net assets acquired, excluding intangible assets and the related deferred tax liabilities |  |  |  |  | (95,961) |
Intangible assets, net |  |  |  |  | 249,452 |
Deferred tax liabilities, non-current |  |  |  |  | (67,945) |
Pre-existing equity interests |  |  |  |  | (91,677) |
Noncontrolling interests |  |  |  |  | (150,000) |
Goodwill |  |  |  |  | ¥ 554,541 |

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- Definition The amount of acquisition cost of a business combination allocated to assets acquired (excluding identifiable intangible assets and the related deferred tax liabilities) less liabilities assumed. + References No definition available. + Details
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- Definition Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination. + References No definition available. + Details
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- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References No definition available. + Details
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- Definition This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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