Annual report pursuant to Section 13 and 15(d)

DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Fair Values of Derivative Assets and Liabilities by Hedge Type (Detail)

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DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Fair Values of Derivative Assets and Liabilities by Hedge Type (Detail) - Interest Expense [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Fixed-Rate Debt and Capital Leases    
Derivatives, Fair Value [Line Items]    
Amount of Gain (Loss) Recognized in Income $ 71 $ 7
Interest rate contracts    
Derivatives, Fair Value [Line Items]    
Amount of Gain (Loss) Recognized in Income $ (71) $ (7)