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Income Taxes - Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Income Tax Disclosure [Abstract] |  |
Tax credit carryforwards | $ 20,007 | $ 41,550
Research and development expenses | 129,836 | 104,582
Net operating loss carryforwards | 87,398 | 77,321
Interest expense | 50,214 | 65,045
Allowances and reserves | 127,473 | 116,148
Deferred compensation | 71,880 | 63,458
Postretirement benefits | 19,138 | 22,741
Lease liabilities | 83,301 | 81,604
Other | 45,819 | 35,624
Gross deferred income tax assets | 635,066 | 608,073
Intangible assets | (167,607) | (167,336)
Right-of-use assets | (75,266) | (75,076)
Other | (42,026) | (37,259)
Gross deferred income tax liabilities | (284,899) | (279,671)
Deferred income tax asset valuation allowances | (97,661) | (85,352)
Net deferred income tax assets | $ 252,506 | $ 243,050

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