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Income Taxes - Deferred Income Tax Assets (Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]    
Tax credit carryforwards $ 41,550 $ 67,451
Research and development expenses 104,582 44,323
Net operating loss carryforwards 77,321 91,704
Interest expense 65,045 79,720
Allowances and reserves 116,148 118,168
Deferred compensation 63,458 40,716
Postretirement benefits 22,741 23,227
Intangible assets 115 212,497
Lease liabilities 81,604 81,298
Other 35,509 35,308
Gross deferred income tax assets 608,073 794,412
Intangible assets (167,336) (175,077)
Right-of-use assets (75,076) (73,757)
Other (37,259) (39,260)
Gross deferred income tax liabilities (279,671) (288,094)
Deferred income tax asset valuation allowances (85,352) (89,841)
Net deferred income tax assets $ 243,050 $ 416,477