CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2024	$ 25,326	$ 2,816	$ 504	$ 10,722	$ 29,582	$ (2,100)	$ (16,198)
Beginning balance (shares) at Dec. 31, 2024			503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2024							215,113,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	644				644
Other comprehensive income (loss)	308					308
Preferred stock issued	743	743
Cash dividends declared:
Common stock dividends	(220)				(220)
Preferred stock dividends	(46)				(46)
Common stock acquired	(100)						$ (100)
Common stock acquired (shares)							1,004,000
Common stock awards exercised	37			(29)			$ 66
Common stock awards exercised (in shares)							(905,000)
Other	0				(1)		$ 1
Other (shares)							(9,000)
Ending balance at Mar. 31, 2025	26,692	3,559	$ 504	10,693	29,959	(1,792)	$ (16,231)
Ending balance (shares) at Mar. 31, 2025			503,880,000
Treasury stock, ending balance (in shares) at Mar. 31, 2025							215,203,000
Beginning balance at Dec. 31, 2025	$ 27,841	3,559	$ 504	10,705	31,392	(1,043)	$ (17,276)
Beginning balance (shares) at Dec. 31, 2025	503,879,642		503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2025	224,801,735						224,802,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 764				764
Other comprehensive income (loss)	(239)					(239)
Cash dividends declared:
Common stock dividends	(233)				(233)
Preferred stock dividends	(58)				(58)
Common stock acquired	(404)						$ (404)
Common stock acquired (shares)							3,176,000
Common stock awards exercised	71			(4)			$ 75
Common stock awards exercised (in shares)							(1,022,000)
Other	0				(1)		$ 1
Other (shares)							(1,000)
Ending balance at Mar. 31, 2026	$ 27,742	$ 3,559	$ 504	$ 10,701	$ 31,864	$ (1,282)	$ (17,604)
Ending balance (shares) at Mar. 31, 2026	503,879,642		503,880,000
Treasury stock, ending balance (in shares) at Mar. 31, 2026	226,954,649						226,955,000