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Goodwill and Other Intangible Assets - Summary of Goodwill Assigned to Reportable Segments for Purposes of Testing for Impairment (Parenthetical) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Apr. 30, 2015
Dec. 31, 2014
Goodwill [Line Items]      
Goodwill $ 4,593,112   $ 3,524,625
All Other [Member]      
Goodwill [Line Items]      
Goodwill 363,293   $ 374,593
All Other [Member] | Trade Processing Business Divestiture [Member]      
Goodwill [Line Items]      
Goodwill $ (11,300) $ (11,300)