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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Financial Instruments on Income Statement (Detail) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Interest Rate Swap [Member] | Non-interest income - other [Member]    
Derivative [Line Items]    
Derivative financial instrument, net $ 0 $ 0
Interest Rate Lock Commitments [Member] | Mortgage banking operations [Member]    
Derivative [Line Items]    
Derivative financial instrument, net 0 0
Forward Delivery Contracts [Member] | Mortgage banking operations [Member]    
Derivative [Line Items]    
Derivative financial instrument, net (1) (1)
Credit Risk Contract [Member] | Non-interest income - other [Member]    
Derivative [Line Items]    
Derivative financial instrument, net $ 0 $ 0