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
Earnings Per Share [Abstract]
Net income	$ 1,944	$ 2,774	$ 2,693
Preferred stock dividends	(122)	(112)	(119)
Dividends and undistributed earnings allocated to participating securities	(1)	(2)	(2)
Net Income (Loss) Available to Common Stockholders, Basic	1,821	2,660	2,572
Net Income (Loss) Available to Common Stockholders, Diluted	$ 1,821	$ 2,660	$ 2,572
Basic average common shares (in shares)	322,337	365,214	352,565
Effect of dilutive securities: equity-based awards (in shares)	4,231	4,895	5,397
Diluted average common shares (in shares)	326,568	370,109	357,962
Anti-dilutive securities (in shares)	1,251	866	3
Basic (in USD per share)	$ 5.65	$ 7.28	$ 7.30
Diluted (in USD per share)	$ 5.58	$ 7.19	$ 7.19