OTHER INTANGIBLE ASSETS, NET (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross	$ 808,899	$ 781,384
Accumulated Amortization	(364,158)	(351,817)
Net	444,741	429,567
Developed Technology Rights [Member]
Finite Lived Intangible Assets [Line Items]
Gross	245,236	238,212
Accumulated Amortization	(127,077)	(123,156)
Net	118,159	115,056
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross	378,446	358,832
Accumulated Amortization	(199,130)	(193,455)
Net	179,316	165,377
Contract and Program Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	144,000	144,000
Accumulated Amortization	(7,200)	(5,400)
Net	136,800	138,600
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	41,217	40,340
Accumulated Amortization	(30,751)	(29,806)
Net	$ 10,466	$ 10,534