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SEGMENT INFORMATION - Revenue and Other Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 25, 2022 | Jun. 26, 2021 | Jun. 25, 2022 | Jun. 26, 2021
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 973,131 | $ 914,607 | $ 1,887,060 | $ 1,739,173
Operating income | 187,411 | 137,550 | 336,189 | 261,253
Depreciation and amortization | 76,421 | 68,105 | 151,720 | 129,613
Capital expenditures | 82,852 | 46,431 | 163,316 | 74,461
RMS |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 186,410 | 176,694 | 362,952 | 353,604
Operating income | 39,526 | 42,580 | 87,408 | 87,515
Depreciation and amortization | 13,228 | 9,844 | 22,697 | 19,523
Capital expenditures | 13,850 | 8,512 | 22,496 | 11,495
DSA |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 591,917 | 540,094 | 1,136,176 | 1,041,272
Operating income | 128,793 | 104,514 | 233,779 | 195,463
Depreciation and amortization | 44,626 | 43,588 | 91,415 | 88,196
Capital expenditures | 41,578 | 20,473 | 90,508 | 37,513
Manufacturing |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 194,804 | 197,819 | 387,932 | 344,297
Operating income | 62,503 | 56,717 | 108,871 | 106,154
Depreciation and amortization | 18,000 | 13,952 | 36,482 | 20,521
Capital expenditures | $ 24,431 | $ 13,602 | $ 47,259 | $ 20,712

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