Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Net income from continuing operations	[1]	$ 1,022	$ 1,715	$ 3,065
Net income from continuing operations attributable to common stockholders	[1]	912	1,605	3,008
Loss from discontinued operations, net of tax	[1]	(2)	(1)	(5)
Net income attributable to common stockholders	[1]	$ 910	$ 1,604	$ 3,003
Basic weighted-average common shares outstanding (in shares)	[1],[2]	303,751	316,690	362,583
Diluted weighted-average common shares outstanding (in shares)	[1],[2]	305,135	318,629	365,180
Basic earnings per common share
Net income from continuing operations (in dollars per share)	[1]	$ 3.00	$ 5.07	$ 8.30
Loss from discontinued operations, net of tax (in dollars per share)	[1]	(0.01)	0	(0.01)
Net income (in dollars per share)	[1]	3.00	5.06	8.28
Diluted earnings per common share
Net income from continuing operations (in dollars per share)	[1]	2.99	5.04	8.24
Loss from discontinued operations, net of tax (in dollars per share)	[1]	(0.01)	0	(0.01)
Net income (in dollars per share)	[1]	$ 2.98	$ 5.03	$ 8.22
Preferred stock dividends — Series B
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (63)	$ (63)	$ (36)
Preferred stock dividends — Series C
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (47)	$ (47)	$ (21)

[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.