Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Additional Information (Detail)

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DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Derivative [Line Items]    
Collateral received under contractual provisions $ 706,000,000 $ 495,000,000
Derivative net liability position 0 0
Pre-tax losses related to cash flow hedges that are currently deferred in AOCI and are expected to be reclassified to income within twelve months $ 293,000,000  
Maximum term over hedging exposures to the variability of cash flow 13 years  
Commodity Asset $ 0 0
Derivative Instrument Recognition Period 11 years  
Change in Credit Rating    
Derivative [Line Items]    
Derivative, Additional Collateral, Obligation to Return Cash $ 0 $ 0
Long-term debt and finance leases | Designated as Hedging Instrument | Fair Value    
Derivative [Line Items]    
Liability Derivatives $ 14,000,000