Earnings Per Share - Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings (loss) per share — basic:
Net Income (Loss)	$ (689)	$ 202	$ 764
Weighted Average Shares Outstanding (Note 8)	285	284	261
Earnings (loss) per common share-basic (in dollars per share)	$ (2.42)	$ 0.71	$ 2.92
Earnings (loss) per share — diluted:
Net Income (Loss)	$ (689)	$ 202	$ 764
Weighted Average Shares Outstanding (Note 8)	285	284	261
Dilutive effect of stock options and other dilutive securities (in shares)	0	2	3
Weighted Average Shares Outstanding (Note 8)	285	286	264
Earnings (loss) per common share-diluted (in dollars per share)	$ (2.42)	$ 0.71	$ 2.89