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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Liabilities (Detail) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Derivative [Line Items]    
Net Amount Presented in the Consolidated Balance Sheets $ 29 $ 13
Financial Instruments 29 12
Cash Collateral 0 0
Net Amount 0 1
Interest rate contracts - designated [Member]    
Derivative [Line Items]    
Net Amount Presented in the Consolidated Balance Sheets 0 3
Financial Instruments   3
Cash Collateral   0
Net Amount   0
Interest rate swaps - not designated [Member]    
Derivative [Line Items]    
Net Amount Presented in the Consolidated Balance Sheets 29 10
Financial Instruments 29 9
Cash Collateral 0 0
Net Amount $ 0 $ 1