Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss)	$ 190	$ 203
Basic average number of shares outstanding (shares)	103	107
Dilutive effect of potentially issuable shares (shares)	1	1
Diluted average number of shares outstanding (shares)	104	108
Basic earnings per share	$ 1.84	$ 1.89
Dilutive effect of potentially issuable shares (USD per share)	(0.01)	(0.01)
Diluted earnings per share	$ 1.83	$ 1.88