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SEGMENT AND GEOGRAPHIC INFORMATION - Financial Information by Reportable Business Segment (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2024 USD ($) segment | Dec. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Segment Reporting [Abstract] |  |  |
Number of reportable segments | segment | 3 |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 4,049,989 | $ 4,129,409 | $ 3,976,060
Selling, general and administrative | 751,003 | 747,855 | 665,098
Amortization of intangible assets | 138,471 | 137,440 | 146,578
Goodwill impairment | 215,000 | 0 | 0
Operating income | 227,347 | 617,261 | 650,975
Interest income | 8,575 | 5,196 | 780
Interest expense | (126,288) | (136,710) | (59,291)
Other income (expense), net | (16,520) | 95,537 | 30,523
Income before income taxes | 93,114 | 581,284 | 622,987
Capital Expenditures | 232,967 | 318,528 | 324,733
Depreciation and amortization | 361,741 | 314,124 | 303,870
Unallocated Corporate (1) |  |  |
Segment Reporting Information [Line Items] |  |  |
Selling, general and administrative | 258,121 | 231,810 | 209,408
Operating income | (258,121) | (231,810) | (209,408)
Capital Expenditures | 1,977 | 2,684 | 3,950
Depreciation and amortization | 6,839 | 3,853 | 2,181
RMS | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 829,377 | 792,343 | 739,175
Cost of revenue (excluding amortization of intangible assets) | 580,491 | 509,970 | 455,607
Selling, general and administrative | 110,982 | 105,965 | 102,795
Amortization of intangible assets | 23,493 | 21,742 | 20,363
Operating income | 114,411 | 154,666 | 160,410
Capital Expenditures | 64,134 | 52,819 | 44,136
Depreciation and amortization | 73,812 | 55,570 | 49,274
DSA |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,451,280 | 2,615,623 | 2,447,316
Goodwill impairment | 0 |  |
DSA | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,451,280 | 2,615,623 | 2,447,316
Cost of revenue (excluding amortization of intangible assets) | 1,697,166 | 1,675,472 | 1,617,760
Selling, general and administrative | 249,097 | 263,770 | 213,870
Amortization of intangible assets | 62,507 | 70,305 | 82,797
Operating income | 442,510 | 606,076 | 532,889
Capital Expenditures | 128,356 | 204,891 | 189,563
Depreciation and amortization | 191,126 | 174,719 | 179,465
Manufacturing |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 769,332 | 721,443 | 789,569
Goodwill impairment | 215,000 |  |
Manufacturing | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 769,332 | 721,443 | 789,569
Cost of revenue (excluding amortization of intangible assets) | 440,511 | 441,411 | 440,042
Selling, general and administrative | 132,803 | 146,311 | 139,027
Amortization of intangible assets | 52,471 | 45,392 | 43,416
Goodwill impairment | 215,000 | 0 | 0
Operating income | (71,453) | 88,329 | 167,084
Capital Expenditures | 38,500 | 58,134 | 87,084
Depreciation and amortization | 89,964 | 79,982 | 72,950
Segment operating income | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income | $ 485,468 | $ 849,071 | $ 860,383

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