Income Taxes (Components Of Income (Loss) Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 2,298	$ 233	$ 460
Foreign	379	98	110
Income before income taxes	$ 2,677	$ 331	$ 570