Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets
Trading assets pledged	$ 1,069,335	$ 802,873
Available-for-sale securities, amortized cost, net of allowance for credit losses	552,160	507,226
Available-for-sale securities	549,037	507,198
Loans at fair value	62,255	70,684
Other assets pledged	$ 209,605	$ 198,775
Stockholders' equity
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	200,000,000	200,000,000
Preferred stock, shares issued (in shares)	2,005,375	2,005,375
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	9,000,000,000	9,000,000,000
Common stock, shares issued (in shares)	4,104,933,895	4,104,933,895
Treasury stock, at cost (in shares)	1,425,422,477	1,408,661,319
Assets pledged
Assets
Trading assets pledged	$ 255,035	$ 165,927
Available-for-sale securities	9,416	7,735
Other assets pledged	18,279	11,984
Recurring
Assets
Federal funds sold and securities purchased under resale agreements at fair value	472,506	327,018
Securities borrowed at fair value	105,987	98,111
Trading assets pledged	1,069,335	802,873
Available-for-sale securities	549,037	507,198
Loans at fair value	62,255	70,684
Liabilities
Deposits at fair value	19,803	20,930
Federal funds purchased and securities loaned or sold under repurchase agreements at fair value	620,136	360,194
Short-term borrowings at fair value	28,937	32,460
Accounts payable and other liabilities	10,738	6,660
Beneficial interests issued by consolidated VIEs at fair value	5	5
Long-term debt at fair value	144,704	134,559
Recurring | Other assets
Assets
Other assets at fair value	$ 21,292	$ 15,849