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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal tax computed at U.S. statutory income tax rate									$ 142,430	$ 143,251	$ 224,384
Enactment of the 2017 Tax Cuts and Jobs Act										(6,059)	550,000
Foreign currency exchange impact on distributed earnings									(3,229)	7,495
GILTI, net of foreign tax credits									10,523	13,727
Settlement of tax audits											706
State income tax, net of federal income tax benefit									3,459	2,910	1,289
Net effect of foreign operations									(52,727)	(57,003)	(131,694)
Effect of stock-based compensation									(9,211)	(9,089)	(19,566)
Other, net									(5,204)	(6,880)	(4,333)
Provision for income taxes	$ 23,719	$ 26,605	$ 27,325	$ 8,392	$ 12,654	$ 28,216	$ 18,884	$ 28,598	$ 86,041	$ 88,352	$ 620,786

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Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.

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