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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 01, 2023	Dec. 31, 2022
Other intangible assets
Gross	$ 1,729,855	$ 1,687,390
Accumulated Amortization	(771,736)	(732,115)
Net	958,119	955,275
Client relationships
Other intangible assets
Gross	1,523,373	1,491,926
Accumulated Amortization	(624,820)	(591,417)
Net	898,553	900,509
Technology
Other intangible assets
Gross	140,448	129,626
Accumulated Amortization	(104,438)	(101,655)
Net	36,010	27,971
Backlog
Other intangible assets
Gross	15,320	15,236
Accumulated Amortization	(13,474)	(12,512)
Net	1,846	2,724
Trademarks and trade names
Other intangible assets
Gross	12,707	12,617
Accumulated Amortization	(4,704)	(4,410)
Net	8,003	8,207
Other
Other intangible assets
Gross	38,007	37,985
Accumulated Amortization	(24,300)	(22,121)
Net	$ 13,707	$ 15,864

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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