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Industry Segment Information (Schedule of Sales and Operating Income by Operating Segment, Excluding Discontinued Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jul. 02, 2023 | Jun. 30, 2024 | Jul. 02, 2023
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 691,685 | $ 709,066 | $ 1,341,605 | $ 1,383,931
Operating income (loss) from continuing operations | 85,724 | 78,056 | 129,840 | 154,175
Interest and other (income) expense, net | (938) | 6,502 | 8,629 | 53,181
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 86,662 | 71,554 | 121,211 | 100,994
Total amortization expense related to finite-lived intangible assets | 90,600 | 92,800 | 181,900 | 184,600
Product [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 606,891 | 624,456 | 1,172,646 | 1,216,736
Service [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 84,794 | 84,610 | 168,959 | 167,195
Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Reportable segment operating income (loss) | (11,449) | (8,707) | (22,810) | (23,404)
Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 377,838 | 372,713 | 724,721 | 719,137
Reportable segment operating income (loss) | 97,915 | 85,241 | 173,345 | 159,673
Life Sciences [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 313,847 | 336,353 | 616,884 | 664,794
Reportable segment operating income (loss) | 112,401 | 127,759 | 214,126 | 257,218
Reportable Segment Revenue [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 691,685 | 709,066 | 1,341,605 | 1,383,931
Reportable Segment Revenue [Member] | Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 378,045 | 372,919 | 725,137 | 719,549
Reportable Segment Revenue [Member] | Life Sciences [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 313,847 | 336,353 | 616,884 | 664,794
Segment Operating Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Reportable segment operating income (loss) | 198,867 | 204,293 | 364,661 | 393,487
Total amortization expense related to finite-lived intangible assets | (90,620) | (92,758) | (181,858) | (184,569)
Purchase accounting adjustments | (623) | (2,891) | (7,245) | (1,977)
Business Combination, Acquisition Related Costs | (5,779) | (28,579) | (17,241) | (46,530)
Significant litigation matters and settlements | (6,276) | 0 | (6,276) | 0
Significant environmental matters | 0 | 0 | 0 | (1,132)
Restructuring and contract termination charges, net | (9,845) | (2,009) | (22,201) | (5,104)
Revenue Purchase Accounting Adjustments [Member] | Reportable Segment Revenue [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ (207) | $ (206) | $ (416) | $ (412)

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