Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Held-to-maturity, fair value		$ 71,149	$ 74,088
Available-for-sale securities	[1]	72,426	69,706
Loans held-for-sale, mortgage loans carried at fair value		1,885	2,011
Time deposits carried at fair value		$ 4,668	$ 2,818
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)		565,322,411	567,732,687
Asset Pledged as Collateral with Right
Available-for-sale securities		$ 356	$ 338
Trading securities at fair value		$ 4,878	$ 3,548

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