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Summary of Computer Software (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Computer software $ 1,085,652 $ 979,414
Accumulated amortization 680,582 613,266
Computer software, net 405,070 366,148
Licensed computer software    
Finite-Lived Intangible Assets [Line Items]    
Computer software 513,443 435,701
Accumulated amortization 282,563 243,866
Software development costs    
Finite-Lived Intangible Assets [Line Items]    
Computer software 404,238 376,026
Accumulated amortization 287,863 275,512
Acquisition technology intangibles    
Finite-Lived Intangible Assets [Line Items]    
Computer software 167,971 167,687
Accumulated amortization $ 110,156 $ 93,888