Derivatives, Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivatives (Textual) [Abstract]
Net derivative gains (losses) from economic hedges related to mortgage loans held for sale and derivative loan commitments	$ (39)	$ 1,300
Not designated as hedging instrument [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(2,119)	3,980
Derivatives (Textual) [Abstract]
Gains (losses) on derivatives used to hedge residential mortgage servicing rights	185	(1,646)
Not designated as hedging instrument [Member] | Mortgage banking [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	144	(866)
Not designated as hedging instrument [Member] | Net gains (losses) on trading and securities [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,800)	4,669
Not designated as hedging instrument [Member] | Other [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(463)	177
Not designated as hedging instrument [Member] | Personnel expense [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(191)	266
Economic hedges [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(253)	(153)
Economic hedges [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	194	(394)
Economic hedges [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(80)	5
Economic hedges [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(366)	231
Economic hedges [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1)	5
Economic hedges [Member] | Mortgage banking [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	146	(368)
Economic hedges [Member] | Mortgage banking [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	146	(368)
Economic hedges [Member] | Mortgage banking [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Mortgage banking [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Mortgage banking [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Net gains (losses) on trading and securities [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Net gains (losses) on trading and securities [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Net gains (losses) on trading and securities [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Net gains (losses) on trading and securities [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Net gains (losses) on trading and securities [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Other [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(399)	215
Economic hedges [Member] | Other [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	48	(26)
Economic hedges [Member] | Other [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(80)	5
Economic hedges [Member] | Other [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(366)	231
Economic hedges [Member] | Other [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1)	5
Economic hedges [Member] | Personnel expense [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(191)	266
Economic hedges [Member] | Personnel expense [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Personnel expense [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(191)	266
Economic hedges [Member] | Personnel expense [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Economic hedges [Member] | Personnel expense [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,866)	4,133
Customer accommodation trading and other derivatives [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(338)	2,716
Customer accommodation trading and other derivatives [Member] | Commodity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	112	113
Customer accommodation trading and other derivatives [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,534)	965
Customer accommodation trading and other derivatives [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(99)	327
Customer accommodation trading and other derivatives [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(7)	12
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(2)	(498)
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(2)	(498)
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member] | Commodity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Mortgage banking [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,800)	4,669
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(336)	3,214
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member] | Commodity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	112	113
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,470)	1,003
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(99)	327
Customer accommodation trading and other derivatives [Member] | Net gains (losses) on trading and securities [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(7)	12
Customer accommodation trading and other derivatives [Member] | Other [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(64)	(38)
Customer accommodation trading and other derivatives [Member] | Other [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Other [Member] | Commodity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Other [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(64)	(38)
Customer accommodation trading and other derivatives [Member] | Other [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Other [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member] | Interest contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member] | Commodity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member] | Equity contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member] | Foreign exchange contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	0	0
Customer accommodation trading and other derivatives [Member] | Personnel expense [Member] | Credit contracts [Member]
Net Gains (Losses) Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	$ 0	$ 0