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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 26, 2022	Dec. 25, 2021
Other intangible assets
Gross	$ 1,667,266	$ 1,672,415
Accumulated Amortization	(647,729)	(611,223)
Net	1,019,537	1,061,192
Backlog
Other intangible assets
Gross	12,513	12,577
Accumulated Amortization	(10,712)	(9,517)
Net	1,801	3,060
Technology
Other intangible assets
Gross	134,544	135,764
Accumulated Amortization	(98,281)	(95,454)
Net	36,263	40,310
Trademarks and trade names
Other intangible assets
Gross	13,018	13,086
Accumulated Amortization	(3,893)	(3,448)
Net	9,125	9,638
Other
Other intangible assets
Gross	35,319	35,231
Accumulated Amortization	(11,801)	(8,445)
Net	23,518	26,786
Other intangible assets
Other intangible assets
Gross	195,394	196,658
Accumulated Amortization	(124,687)	(116,864)
Net	70,707	79,794
Client relationships
Other intangible assets
Gross	1,471,872	1,475,757
Accumulated Amortization	(523,042)	(494,359)
Net	$ 948,830	$ 981,398

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