Income Tax (Provision for Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 9	$ 91	$ 75
Current Foreign Tax Expense (Benefit)	120	72	79
Current Income Tax Expense (Benefit)	129	163	154
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	68	(127)	(60)
Deferred Foreign Income Tax Expense (Benefit)	7	38	44
Deferred income taxes	75	(89)	(16)
Income Tax Expense (Benefit)	$ 204	$ 74	$ 138