Income Tax (Provision for Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 150	$ (18)	$ 10
Current Foreign Tax Expense (Benefit)	167	58	120
Current Income Tax Expense (Benefit)	317	40	130
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	(129)	236	32
Deferred Foreign Income Tax Expense (Benefit)	68	(25)	35
Deferred income taxes	(61)	211	67
Income Tax Expense (Benefit)	$ 256	$ 251	$ 197