Income Tax (Provision for Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 91	$ 75	$ (9)
Current Foreign Tax Expense (Benefit)	72	79	60
Current Income Tax Expense (Benefit)	163	154	51
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	(127)	(60)	182
Deferred Foreign Income Tax Expense (Benefit)	38	44	29
Deferred income taxes	(89)	(16)	211
Income Tax Expense (Benefit)	$ 74	$ 138	$ 262