v3.19.3.a.u2
Derivative Financial Instruments And Hedging Activities (Schedule Of The Effect Of Derivative Instruments On The Statements Of Operations) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]      
Debt securities - taxable $ 643 $ 625 $ 596
Loans, including fees 3,866 3,613 3,228
Deposits 447 250 156
Long-term borrowings 351 322 212
Other 927 963 952
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amounts Related to Interest Settlements on Derivatives 0 (1) (4)
Gain or (Loss) Recognized in Income on Derivatives (2) 4 0
Gain or (Loss) Recognized in Income on Related Hedged Item 2 (4) 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings 0 (1) (4)
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amounts Related to Interest Settlements on Derivatives 0 0 0
Gain or (Loss) Recognized in Income on Derivatives 0 0 0
Gain or (Loss) Recognized in Income on Related Hedged Item 0 0 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings 0 0 0
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amounts Related to Interest Settlements on Derivatives (14) (15) 2
Gain or (Loss) Recognized in Income on Derivatives 92 1 0
Gain or (Loss) Recognized in Income on Related Hedged Item (92) (1) 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings (14) (15) 2
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Other in Non-Interest Expense [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amounts Related to Interest Settlements on Derivatives 0 0 0
Gain or (Loss) Recognized in Income on Derivatives 0 0 (19)
Gain or (Loss) Recognized in Income on Related Hedged Item 0 0 20
Gain (Loss) on Fair Value Hedges Recognized in Earnings 0 0 1
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain or (Loss) Reclassified from AOCI into Income 0 0 0
Net Income (Expense) Recognized on Cash Flow Hedges 0 0 0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain or (Loss) Reclassified from AOCI into Income [1] (24) 12 86
Net Income (Expense) Recognized on Cash Flow Hedges [2] (24) 12 86
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain or (Loss) Reclassified from AOCI into Income 0 0 0
Net Income (Expense) Recognized on Cash Flow Hedges 0 0 0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Other in Non-Interest Expense [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain or (Loss) Reclassified from AOCI into Income 0 0 0 [1]
Net Income (Expense) Recognized on Cash Flow Hedges $ 0 $ 0 $ 0
[1] Pre-tax
[2] See Note 15 for gain or (loss) recognized for cash flow hedges in AOCI.