Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Basic earnings per share:
Net income attributable to common shareholders	$ 354	$ 241	$ 664	$ 325
Net income available to common shareholders	$ 354	$ 241	$ 664	$ 325
Weighted average common shares outstanding (in shares)	383,000,000	381,000,000	383,000,000	381,000,000
Basic earnings per share (in dollars per share)	$ 0.92	$ 0.63	$ 1.73	$ 0.85
Diluted earnings per share:
Net income available to common shareholders	$ 354	$ 241	$ 664	$ 325
Income impact of assumed conversions			1
Net income available to common shareholders and assumed conversions	$ 354	$ 241	$ 665	$ 325
Weighted average common shares outstanding (in shares)	383,000,000	381,000,000	383,000,000	381,000,000
Incremental shares from assumed conversions (in shares)	2,000,000	2,000,000	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 per share (in dollars per share)	$ 0.92	$ 0.63	$ 1.73	$ 0.85
Stock Compensation Plan
Diluted earnings per share:
Antidilutive awards excluded from earnings per share (in shares)	2,046,312	3,990,270	3,230,213	5,261,914