Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic earnings (loss) per share:
Net income (loss)	$ 155	$ (128)	$ 819	$ 197
Weighted average common shares outstanding (in shares)	383,000,000	382,000,000	383,000,000	381,000,000
Basic earnings (loss) per share (in dollars per share)	$ 0.40	$ (0.33)	$ 2.14	$ 0.52
Diluted earnings (loss) per share:
Net income (loss)	$ 155	$ (128)	$ 819	$ 197
Income impact of assumed conversions			1
Net income (loss) available to common shareholders and assumed conversions	$ 155	$ (128)	$ 820	$ 197
Weighted average common shares outstanding (in shares)	383,000,000	382,000,000	383,000,000	381,000,000
Incremental shares from assumed conversions (in shares)	2,000,000	1,000,000	2,000,000	1,000,000
Adjusted weighted average shares - diluted (in shares)	385,000,000	383,000,000	385,000,000	382,000,000
Diluted earnings (loss) per share (in dollars per share)	$ 0.40	$ (0.33)	$ 2.13	$ 0.52
Stock Compensation Plan
Diluted earnings (loss) per share:
Antidilutive awards excluded from earnings per share (in shares)	3,231,385	5,089,280	3,230,603	5,204,369