Income Taxes - Components of Deferred Tax Asset and Liability (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Noncurrent deferred tax asset liability
Net operating loss carryforwards	$ (26,800)
Unremitted earnings	411,000	$ 714,000
Deferred Tax Liabilities, Gross	515,410	516,775
Less: Valuation allowance	5,965	7,146
Deferred tax liabilities, net	521,375	523,921
Portion included in non-current assets	12,103	12,219
Gross non-current deferred tax liability	(533,478)	(536,140)
Cumulative Effect, Period of Adoption, Adjustment
Noncurrent deferred tax asset liability
Deferred tax asset net	32,400	35,100
Non Current
Noncurrent deferred tax asset liability
Differences in basis of property and accelerated depreciation	46,023	45,747
Reserves not currently deductible	(61,872)	(44,239)
Pensions	39,256	39,820
Differences in basis of intangible assets and accelerated amortization	565,661	537,534
Net operating loss carryforwards	(26,767)	(41,782)
Share-based compensation	(13,780)	(12,060)
Foreign Tax Credit Carryforwards	(261)	(333)
Unremitted earnings	10,657	12,977
Other	$ (43,507)	$ (20,889)

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Deferred Tax Assets Liabilities Noncurrent Other Net

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Deferred Tax Liabilities, Prepaid Pension Cost Benefit

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

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