Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic earnings per share:
Net income attributable to common shareholders	$ 310	$ 84
Net income available to common shareholders	$ 310	$ 84
Weighted average common shares outstanding (in shares)	383,000,000	381,000,000
Basic earnings per share (in dollars per share)	$ 0.81	$ 0.22
Diluted earnings per share:
Net income attributable to common shareholders	$ 310	$ 84
Net income available to common shareholders	310	84
Income impact of assumed conversions	1
Net income available to common shareholders and assumed conversions	$ 311	$ 84
Weighted average common shares outstanding (in shares)	383,000,000	381,000,000
Incremental shares from assumed conversions (in shares)	1,000,000	1,000,000
Adjusted weighted average shares - diluted (in shares)	384,000,000	382,000,000
Diluted earnings per share (in dollars per share)	$ 0.81	$ 0.22
Stock Compensation Plan
Diluted earnings per share:
Antidilutive awards excluded from earnings per share (in shares)	4,414,113	6,533,558