Annual report pursuant to Section 13 and 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Hedges (Details)

v3.22.0.1
DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Hedges (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]      
Fair value hedge $ 869    
Fair value hedging adjustments 17 $ (62)  
Investment Securities      
Derivative Instruments, Gain (Loss) [Line Items]      
Designated hedged items 7,400    
Amortized Cost 17,150 6,637  
Cumulative Amount of Fair Value Hedging Adjustment To Hedged Items (117) 3  
Amortized cost basis of the closed portfolios used in hedging relationships 16,200    
Hedged Asset, Fair Value Hedge, Last-of-Layer, Cumulative Increase (Decrease) (101)    
Subordinated notes      
Derivative Instruments, Gain (Loss) [Line Items]      
Amortized Cost 1,981 6,383  
Cumulative Amount of Fair Value Hedging Adjustment To Hedged Items 45 232  
Interest income available for sale securities taxable | Investment Securities      
Derivative Instruments, Gain (Loss) [Line Items]      
Change in fair value for derivatives designated as fair value hedges 108 6 $ 0
Interest income available for sale securities taxable | Hedged investment securities      
Derivative Instruments, Gain (Loss) [Line Items]      
Change in fair value for derivatives designated as fair value hedges (114) 3 0
Interest expense subordinated notes and other long term debt | Subordinated notes      
Derivative Instruments, Gain (Loss) [Line Items]      
Change in fair value for derivatives designated as fair value hedges (184) 113 127
Interest expense subordinated notes and other long term debt | Hedged Subordinated notes      
Derivative Instruments, Gain (Loss) [Line Items]      
Change in fair value for derivatives designated as fair value hedges $ 187 $ (118) $ (125)