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Income Taxes - U.S. Statutory Federal Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. statutory federal tax expense (benefit)	$ (43,481)	$ (225,014)	$ 81,007
Increase (decrease) in taxes resulting from:
State and local income taxes	(10,614)	(11,135)	(13,668)
U.S. tax on GILTI	0	0	10,649
NCI	(9,466)	11,565	(7,200)
Foreign tax differential, net	38,667	13,479	1,460
Valuation allowance, net	148,783	730,787	79,168
Other changes to uncertain tax positions	7,484	4,098	7,753
Stranded tax effects from AOCI	0	(35,619)	0
Impact of tax reform	0	0	(1,373)
CARES Act Benefit	(124,753)	0	0
Other, net	11,972	(2,931)	15,535
Total income tax expense	$ 18,592	$ 485,230	$ 173,331

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