CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022
ASSETS:
Debt securities available for sale	[1]	$ 23,845	$ 24,007
Securities held-to-maturity, fair value		9,064	9,042
Debt securities held to maturity (fair value of $9,064 and $9,042 respectively, and including $163 and $110 pledged to creditors, respectively)	[1]	$ 9,677	$ 9,834
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)		647,009,415	645,220,018
Common stock, outstanding (in shares)		483,982,264	492,282,158
Treasury stock (in shares)		163,027,151	152,937,860
Asset Pledged as Collateral
ASSETS:
Debt securities available for sale		$ 1,335	$ 270
Debt securities held to maturity (fair value of $9,064 and $9,042 respectively, and including $163 and $110 pledged to creditors, respectively)		$ 163	$ 110

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