Annual report pursuant to Section 13 and 15(d)

SHORT-TERM BORROWINGS (Details)

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SHORT-TERM BORROWINGS (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Short-term Debt [Line Items]    
Total short-term borrowings $ 2,017 $ 5,056
Federal funds purchased and securities sold under agreements to repurchase    
Short-term Debt [Line Items]    
Total short-term borrowings 2,004 1,318
Federal Home Loan Bank advances    
Short-term Debt [Line Items]    
Total short-term borrowings 0 3,725
Other borrowings    
Short-term Debt [Line Items]    
Total short-term borrowings $ 13 $ 13