Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Class of Stock [Line Items]
Net income from continuing operations	[1]	$ 320	$ 655
Net income from continuing operations attributable to common stockholders	[1]	292	627
Loss from discontinued operations, net of tax	[1]	(1)	0
Net income attributable to common stockholders	[1]	$ 291	$ 627
Basic weighted-average common shares outstanding (in shares)	[1],[2]	302,657	335,678
Diluted weighted-average common shares outstanding (in shares)	[1],[2]	303,448	337,812
Basic earnings per common share
Net income from continuing operations (in dollars per share)	[1]	$ 0.97	$ 1.87
Net income (in dollars per share)	[1]	0.96	1.87
Diluted earnings per common share
Net income from continuing operations (in dollars per share)	[1]	0.96	1.86
Net income (in dollars per share)	[1]	$ 0.96	$ 1.86
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (16)	$ (16)
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends	[1]	$ (12)	$ (12)

[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.