Income Taxes - Summary of Reconciliation of Income Tax (Expense) Benefit from the Statutory Income Tax Rate to the Effective Tax Rate Based on Income before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income before income tax	$ 730,888	$ 463,328	$ 373,780
Income tax at the U.S. statutory federal rate (21% in 2021, 2020, and 2019)	(153,486)	(97,299)	(78,494)
Decrease (increase) in income tax resulting from:
Foreign rate differential	2,742	2,160	438
State income taxes, net of federal benefit		970	1,621
U.S. earnings not subject to federal income tax	132,266	82,921	85,495
Equity investments		380	1,091
Change in valuation allowance	(10,040)	(8,514)	(7,911)
Statutory tax rate change	(43,924)	(9,471)
Interest disallowance	(646)
Other items, net	(860)	(2,203)	381
Income tax (expense) benefit	$ (73,948)	$ (31,056)	$ 2,621