Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share:
Net income attributable to common shareholders	$ 612	$ 759	$ 739
Net income available to common shareholders	$ 612	$ 759	$ 739
Weighted average common shares outstanding (in shares)	381,000,000	380,000,000	373,000,000
Basic earnings per share (in dollars per share)	$ 1.61	$ 2.00	$ 1.98
Diluted earnings per share:
Net income attributable to common shareholders	$ 612	$ 759	$ 739
Net income available to common shareholders	612	759	739
Income impact of assumed conversions	1	1
Net income available to common shareholders and assumed conversions	$ 613	$ 760	$ 739
Weighted average common shares outstanding (in shares)	381,000,000	380,000,000	373,000,000
Incremental shares from assumed conversions (in shares)	2,000,000	0	1,000,000
Adjusted weighted average shares - diluted (in shares)	383,000,000	380,000,000	374,000,000
Diluted earnings per share (in dollars per share)	$ 1.60	$ 2.00	$ 1.98
Stock Compensation Plan
Diluted earnings per share:
Antidilutive awards excluded from earnings per share (in shares)	5,839,549	10,239,501	9,066,753