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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 28, 2024 | Dec. 30, 2023
--- | --- | ---
Other intangible assets |  |
Gross | $ 1,743,649 | $ 1,729,559
Accumulated Amortization | (965,188) | (865,508)
Net | 778,461 | 864,051
Client relationships |  |
Other intangible assets |  |
Gross | 1,541,032 | 1,528,780
Accumulated Amortization | (808,507) | (721,322)
Net | 732,525 | 807,458
Technology |  |
Other intangible assets |  |
Gross | 144,241 | 142,190
Accumulated Amortization | (118,793) | (111,764)
Net | 25,448 | 30,426
Trademarks and trade names |  |
Other intangible assets |  |
Gross | 12,091 | 11,878
Accumulated Amortization | (5,505) | (4,568)
Net | 6,586 | 7,310
Backlog |  |
Other intangible assets |  |
Gross | 3,100 | 3,100
Accumulated Amortization | (3,100) | (2,177)
Net | 0 | 923
Other |  |
Other intangible assets |  |
Gross | 43,185 | 43,611
Accumulated Amortization | (29,283) | (25,677)
Net | $ 13,902 | $ 17,934

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