Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 162	$ 181	$ 555	$ 512
Effective income tax rate	13.60%	16.20%	16.00%	16.50%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 191	$ 62	$ 280	$ 140
Income Tax Reconciliation Deductions FDII	(41)	19	11	48
Income Taxes Receivable	402		402		$ 1,500
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 64	$ 21	$ 110	$ 48