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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Employee and retiree benefits | $ 87,924 | $ 80,382
Credit and net operating loss carryforwards | 220,156 | 225,152
Intangible assets | 8,477 | 12,489
Deferred Tax Assets, in Process Research and Development | 15,477 | 481
Gain on foreign currency translation | 3,285 | 0
Interest limitation | 39,867 | 19,380
Inventory | 14,396 | 13,308
Deferred Tax Asset Lease Obligations | 53,751 | 0
Other, net | 14,351 | 17,528
Gross deferred tax assets | 457,684 | 368,720
Property, plant and equipment, net | (49,158) | (22,511)
Intangible assets | (621,044) | (616,333)
Deferred Tax Liabilities, Right of Use Assets | (53,555) | 0
Loss on foreign currency translation | 0 | (7,717)
Deferred taxes on deemed repatriation | (46,066) | (88,759)
Gross deferred tax liabilities | (769,823) | (735,320)
Valuation allowance | (203,765) | (200,280)
Total net deferred tax liabilities | $ (515,904) | $ (566,880)

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