OTHER INTANGIBLE ASSETS, NET (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Gross	$ 1,036,631	$ 1,049,810
Accumulated Amortization	(484,117)	(440,180)
Net	552,514	609,630
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross	274,522	280,595
Accumulated Amortization	(160,020)	(148,064)
Net	114,502	132,531
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross	568,566	573,722
Accumulated Amortization	(263,098)	(239,798)
Net	305,468	333,924
Contract and Program Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	144,000	144,000
Accumulated Amortization	(25,200)	(19,800)
Net	118,800	124,200
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross	49,543	51,493
Accumulated Amortization	(35,799)	(32,518)
Net	$ 13,744	$ 18,975