Income Taxes (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Details of income tax provision (benefit) [Abstract]
Current: Federal	$ 1	$ 16	$ (33)
Current: Foreign	183	228	214
Total current income tax provision (benefit)	184	244	181
Deferred: Federal	26	(1)
Deferred: Foreign	85	17	33
Total deferred income tax provision (benefit)	111	16	33
Effective income tax rate	$ 295	$ 260	$ 214