Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 187	$ 156
Effective income tax rate	16.50%	15.60%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 44	$ 40
Income Tax Reconciliation Deductions FDII	15	15
Income Taxes Receivable	1,300		$ 1,500
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 21	$ 13