Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions		Jun. 30, 2025	Dec. 31, 2024
Held-to-maturity, fair value		$ 67,032	$ 66,275
Available-for-sale securities	[1]	90,577	85,992
Loans held-for-sale, mortgage loans carried at fair value		2,285	2,251
Time deposits carried at fair value		7,305	5,754
Long-term debt, fair value		$ 1,152	$ 391
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, authorized (in shares)		4,000,000,000	4,000,000,000
Common stock, issued (in shares)		2,125,725,742	2,125,725,742
Common stock in treasury (in shares)		567,509,986	565,929,654
Fair Value, Measurements, Recurring
Available-for-sale securities		$ 90,577	$ 85,992
Loans held-for-sale, mortgage loans carried at fair value		2,285	2,251
Time deposits carried at fair value		7,305	5,754
Long-term debt, fair value		1,152	391
Level 2 | Fair Value, Measurements, Recurring
Available-for-sale securities		67,100	62,101
Loans held-for-sale, mortgage loans carried at fair value		2,285	2,251
Time deposits carried at fair value		7,305	5,754
Long-term debt, fair value		1,152	391
Asset Pledged as Collateral with Right
Held-to-maturity, fair value		32
Available-for-sale securities		319	320
Trading securities at fair value		$ 12,819	$ 7,501

[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.