Income Taxes - Additional information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income (loss) from continuing operations before tax	$ (29)	$ 39
Income tax benefit	18	94
Tax rate benefit amount	10	$ 90
Unrecognized tax benefits decrease in income tax returns	$ 10