Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (180)	$ 6
Income (loss) from continuing operations before income tax benefit (expense)	$ (2,486)	$ (658)
Effective income tax rate	7.20%	(0.90%)
Statutory federal income tax rate	21.00%	21.00%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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