Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 189	$ 821
Effective income tax rate	16.50%	27.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 41	$ 52
Income Tax Reconciliation Deductions FDII	$ 15	$ 11