CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
ASSETS:
Fair Value	[1]	$ 31,187	$ 29,777
Securities held-to-maturity, fair value		8,132	8,350
Asset-backed investments included in HTM securities	[1]	$ 9,054	$ 9,184
Preferred stock:
Preferred stock, par value (in dollars per share)		$ 25	$ 25.00
Preferred stock, authorized (in shares)		100,000,000	100,000,000
Preferred stock, issued (in shares)		2,050,000	2,050,000
Preferred stock, outstanding (in shares)		2,050,000	2,050,000
Common stock:
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, authorized (in shares)		1,000,000,000	1,000,000,000
Common stock, issued (in shares)		649,141,636	647,829,720
Common stock, outstanding (in shares)		458,485,032	466,418,055
Treasury stock (in shares)		190,656,604	181,411,665
Asset Pledged as Collateral
ASSETS:
Fair Value		$ 80	$ 110
Asset-backed investments included in HTM securities		$ 183	$ 204

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