Annual report pursuant to Section 13 and 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details)

v3.10.0.1
DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ 59  
Total notional value 4,877 $ 8,375
Gross amounts of recognized assets 500 322
Gross amounts of recognized liabilities 404 331
Fair Value Hedges    
Derivative [Line Items]    
Total notional value 4,865 8,375
Cash Flow Hedges    
Derivative [Line Items]    
Total notional value 12 0
Securities Investment [Member]    
Derivative [Line Items]    
Total notional value 12  
Securities Investment [Member] | Fair Value Hedges    
Derivative [Line Items]    
Total notional value 0  
Securities Investment [Member] | Cash Flow Hedges    
Derivative [Line Items]    
Total notional value 12  
Other long-term debt    
Derivative [Line Items]    
Total notional value 4,865 8,375
Other long-term debt | Fair Value Hedges    
Derivative [Line Items]    
Total notional value 4,865 8,375
Other long-term debt | Cash Flow Hedges    
Derivative [Line Items]    
Total notional value 0 0
Accrued income and other assets    
Derivative [Line Items]    
Interest Rate Fair Value Hedge Asset at Fair Value 44 22
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value 261 187
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value 23 18
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value 172 92
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value 0 3
Gross amounts of recognized assets 500 322
Accrued expenses and other liabilities    
Derivative [Line Items]    
Interest Rate Fair Value Hedge Liability at Fair Value 42 121
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value 165 100
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value 19 18
Price Risk Derivative Instruments Not Designated as Hedging Instruments Liability, at Fair Value 168 87
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value 10 5
Gross amounts of recognized liabilities $ 404 $ 331
Customer Contracts [Member]    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Purpose Capital markets fees  
Mortgage banking income | Not Designated as Hedging Instrument [Member] | Interest Rate Contract | Fair Value Hedges    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ (19)  
Foreign Exchange Contract [Member]    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Purpose Capital markets fees  
Capital markets fees [Domain] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract | Fair Value Hedges    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ 41  
Capital markets fees [Domain] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Fair Value Hedges    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net 27  
Capital markets fees [Domain] | Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Fair Value Hedges    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ 6  
Equity Contract [Member]    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Purpose Other noninterest expense  
Commodity Contract [Member]    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Purpose Capital markets fees  
Other Contract [Member]    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Purpose Mortgage banking income  
Other Expense [Member] | Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Fair Value Hedges    
Derivative [Line Items]    
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net $ 4