Summary of Fair Value of Assets Acquired and Liabilities Assumed in Conjunction with Acquisition (Detail) - Entity [Domain] - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
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Business Acquisition [Line Items] | |||||||||
Goodwill | $ 3,976,617 | $ 3,955,901 | |||||||
Acquisitions During Period | |||||||||
Business Acquisition [Line Items] | |||||||||
Goodwill | 190,190 | ||||||||
Intangible assets with indefinite lives | 163,400 | ||||||||
Intangible assets with definite lives | [1] | 140,285 | |||||||
Net assets and non-controlling interests acquired | [2] | (20,619) | |||||||
Deferred tax liabilities | (7,910) | ||||||||
Total | [3] | $ 465,346 | |||||||
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