Earnings (Loss) Per Share (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	1,100,000	1,000,000
Antidilutive securities excluded from computation of earnings (in shares)	1,000	120,000
Treasury stock, shares, acquired (in shares)	445,000	66,000
Purchase of treasury stock	$ 21	$ 3