Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets
Trading assets pledged	$ 787,489	$ 540,607
Available-for-sale securities, amortized cost, net of allowance for credit losses	335,251	205,456
Available-for-sale securities	334,548	201,704
Loans at fair value	42,137	38,851
Other assets pledged	$ 175,935	$ 159,308
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)	2,165,375	2,740,375
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)	1,289,593,473	1,228,275,301
Assets pledged
Assets
Trading assets pledged	$ 163,427	$ 128,994
Available-for-sale securities	11,084	9,219
Other assets pledged	6,994	6,764
Recurring
Assets
Federal funds sold and securities purchased under resale agreements at fair value	368,964	259,813
Securities borrowed at fair value	107,599	70,086
Trading assets pledged	787,489	540,565
Available-for-sale securities	334,548	201,704
Loans at fair value	42,137	38,851
Liabilities
Deposits at fair value	51,284	78,384
Federal funds purchased and securities loaned or sold under repurchase agreements at fair value	320,406	169,003
Short-term borrowings at fair value	28,307	20,042
Accounts payable and other liabilities at fair value	5,865	5,637
Beneficial interests issued by consolidated VIEs at fair value	1	1
Long-term debt at fair value	102,129	87,924
Recurring | Other assets
Assets
Other assets at fair value	$ 14,169	$ 12,306