DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Financial Instruments on Income Statement (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 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