Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ (12)	$ (15)	$ (40)	$ (38)
Loss before income taxes	(24)	$ 58	22	$ 145
Unrecognized Tax Benefits	239		239
Decrease in Unrecognized Tax Benefits is Reasonably Possible	13		13
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount	$ 27		$ 27