Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 97	$ 187
Effective income tax rate	16.80%	16.50%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 34	$ 44
Income Tax Reconciliation Deductions FDII	6	15
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 16	$ 21