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Income Taxes - Deferred Income Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Tax credit carryforwards | $ 100,575 | $ 71,428
Research and development expenses | 27,996 | 41,862
Net operating loss carryforwards | 124,792 | 161,846
Interest expense | 90,671 | 108,069
Allowances and reserves | 102,634 | 92,372
Deferred compensation | 66,183 | 60,665
Postretirement benefits | 31,841 | 38,182
Intangible assets | 219,629 | 231,527
Lease liabilities | 70,712 | 74,600
Other | 46,382 | 42,058
Gross deferred income tax assets | 881,415 | 922,609
Intangible assets | (189,021) | (187,001)
Right-of-use assets | (63,206) | (66,404)
Other | (40,781) | (25,500)
Gross deferred income tax liabilities | (293,008) | (278,905)
Deferred income tax asset valuation allowances | (101,489) | (631,914)
Net deferred income tax assets | $ 486,918 | $ 11,790

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