OTHER INTANGIBLE ASSETS, NET (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Gross	$ 1,038,914	$ 1,049,810
Accumulated Amortization	(455,719)	(440,180)
Net	583,195	609,630
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross	275,291	280,595
Accumulated Amortization	(152,570)	(148,064)
Net	122,721	132,531
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross	569,959	573,722
Accumulated Amortization	(247,900)	(239,798)
Net	322,059	333,924
Contract and Program Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	144,000	144,000
Accumulated Amortization	(21,600)	(19,800)
Net	122,400	124,200
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	49,664	51,493
Accumulated Amortization	(33,649)	(32,518)
Net	$ 16,015	$ 18,975