OTHER INTANGIBLE ASSETS, NET (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross	$ 786,556	$ 651,310
Accumulated Amortization	(344,261)	(321,642)
Net	442,295	329,668
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross	240,105	243,440
Accumulated Amortization	(121,105)	(114,036)
Net	119,000	129,404
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross	361,776	367,230
Accumulated Amortization	(190,337)	(180,580)
Net	171,439	186,650
Contract and Program Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	144,000
Accumulated Amortization	(3,600)
Net	140,400
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	40,675	40,640
Accumulated Amortization	(29,219)	(27,026)
Net	$ 11,456	$ 13,614