Income Tax - Differences Between the Provision for Income Taxes and Income Taxes at the Statutory Federal Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income taxes at statutory federal rate	$ 113,613	$ 135,802	$ 154,494
Foreign tax credit	(15,651)	(9,464)	(18,231)
State income taxes, net of federal income tax effect and other	2,828	2,653	12,532
Other	3,594	1,423	(231)
Income tax expense	$ 104,384	$ 130,414	$ 148,564
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income taxes at statutory federal rate	21.00%	21.00%	21.00%
Foreign tax credit	(2.90%)	(1.50%)	(2.50%)
State income taxes, net of federal income tax effect and other	0.50%	0.40%	1.70%
Other	0.70%	0.20%	0.00%
Income tax expense	19.30%	20.10%	20.20%