Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Net Income (Loss)	$ 235	$ 190
Basic average number of shares outstanding (shares)	100	103
Dilutive effect of potentially issuable shares (shares)	1	1
Diluted average number of shares outstanding (shares)	101	104
Basic earnings per share	$ 2.34	$ 1.84
Dilutive effect of potentially issuable shares (USD per share)	(0.01)	(0.01)
Diluted earnings per share	$ 2.33	$ 1.83