Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income tax (expense) benefit	$ (47)	$ 94
Earnings (loss) before income taxes and noncontrolling interests	134	(920)
Tax expense (benefit) relating to valuation allowance		105
Asset impairments		$ 854
Decrease in UTB that is reasonably possible	44
Unrecognized tax benefits	54
Valuation Allowance	$ 54