Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective tax rate from continuing operations	(4.90%)	52.30%
Unrecognized Tax Benefits	$ 274		$ 261
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	189		$ 183
Decrease in Unrecognized Tax Benefits is Reasonably Possible	29
The CARES Act	$ 2,200,000