Earnings per Common Share (Schedule of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020
Class of Stock [Line Items]
Net income from continuing operations	[1]	$ 1,715	$ 3,065		$ 1,086
Net income from continuing operations attributable to common stockholders	[1]	1,605	3,008		1,086
Loss from discontinued operations, net of tax		(1)	(5)	[1]	(1)	[1]
Net income attributable to common stockholders	[1]	$ 1,604	$ 3,003		$ 1,085
Basic weighted-average common shares outstanding (in shares)	[1],[2]	316,690,000	362,583,000		375,629,000
Diluted weighted-average common shares outstanding (in shares)	[1],[2]	318,629,000	365,180,000		377,101,000
Basic earnings per common share
Net income from continuing operations (in dollars per share)	[1]	$ 5.07	$ 8.30		$ 2.89
Loss from discontinued operations, net of tax (in dollars per share)	[1]	0	(0.01)		0
Net income (in dollars per share)	[1]	5.06	8.28		2.89
Diluted earnings per common share
Net income from continuing operations (in dollars per share)	[1]	5.04	8.24		2.88
Loss from discontinued operations, net of tax (in dollars per share)	[1]	0	(0.01)		0
Net income (in dollars per share)	[1]	$ 5.03	$ 8.22		$ 2.88
Antidilutive securities excluded from computation of earnings per share, amount (in shares)		0	0		800,000
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (63)	$ (36)		$ 0
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (47)	$ (21)		$ 0

[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

[2] Includes shares related to share-based compensation that vested but were not yet issued.(c)During the year ended December 31, 2020, there were 0.8 million in shares underlying share-based awards excluded because their inclusion would have been antidilutive. There were no antidilutive shares during the years ended December 31, 2022, and 2021.