Income Taxes (Details Textuals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Actual tax rates	22.40%	58.70%	23.90%	41.90%
Unrecognized tax benefits change as a result of potential resolutions of prior years' tax	$ 133		$ 133
Unrecognized tax benefits that, if recognized, could impact effective tax rate	$ 105		$ 105