Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 181	$ 175	$ 512	$ 568
Effective income tax rate	16.20%	16.10%	16.50%	16.80%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 62	$ 42	$ 140	$ 124
Income Tax Reconciliation Deductions FDII	19	16	48	46
Income Taxes Receivable	810		810		$ 850
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 21	$ 11	$ 48	$ 26