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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 25, 2022 | Dec. 25, 2021
--- | --- | ---
Other intangible assets |  |
Gross | $ 1,700,805 | $ 1,672,415
Accumulated Amortization | (668,433) | (611,223)
Net | 1,032,372 | 1,061,192
Backlog |  |
Other intangible assets |  |
Gross | 15,295 | 12,577
Accumulated Amortization | (11,862) | (9,517)
Net | 3,433 | 3,060
Technology |  |
Other intangible assets |  |
Gross | 130,236 | 135,764
Accumulated Amortization | (98,132) | (95,454)
Net | 32,104 | 40,310
Trademarks and trade names |  |
Other intangible assets |  |
Gross | 12,680 | 13,086
Accumulated Amortization | (3,982) | (3,448)
Net | 8,698 | 9,638
Other |  |
Other intangible assets |  |
Gross | 38,153 | 35,231
Accumulated Amortization | (15,222) | (8,445)
Net | 22,931 | 26,786
Other intangible assets |  |
Other intangible assets |  |
Gross | 196,364 | 196,658
Accumulated Amortization | (129,198) | (116,864)
Net | 67,166 | 79,794
Client relationships |  |
Other intangible assets |  |
Gross | 1,504,441 | 1,475,757
Accumulated Amortization | (539,235) | (494,359)
Net | $ 965,206 | $ 981,398

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