Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Additional Information (Detail)

v3.10.0.1
DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Additional Information (Detail) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Derivative [Line Items]    
Collateral received under contractual provisions $ 59 $ 17
Derivative net liability position 0 16
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 $ 3  
Maximum term over hedging exposures to the variability of cash flow 14 years  
Change in Credit Rating    
Derivative [Line Items]    
Derivative, Additional Collateral, Obligation to Return Cash $ 45 $ 174