Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Hedges (Details)

v3.19.2
DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Hedges (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]          
Document Period End Date     Jun. 30, 2019    
Fair Value Hedge Liabilities $ 6,769   $ 6,769   $ 4,845
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) 117   117   $ (12)
Interest expense subordinated notes and other long term debt [Member] | Subordinated notes [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge 88 $ 134 129 $ 66  
Interest expense subordinated notes and other long term debt [Member] | Hedged Subordinated notes [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge $ (88) $ (132) $ (129) $ (61)