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Income Taxes - U.S. Statutory Federal Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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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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