PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Plan Assumptions) (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pension Plan [Member]
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.09%	3.46%
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	3.50%	3.55%
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	3.46%	3.93%
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	7.47%	7.47%
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	3.50%	3.54%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate Net Periodic	2026	2026
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.20%	3.54%
DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract
DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	7.85%	8.30%
DefinedBenefitPlanUltimateHealthCareCostTrendRate	4.50%	4.50%
DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	3.54%	4.02%
Defined Benefit Plan Assumed Health Care Cost Trend Rates Net Periodic [Abstract]
Defined Benefit Plan Health Care Cost Trend Rate Assumed for Next Fiscal Year Net Periodic	8.30%	8.25%
Defined Benefit Plan Ultimate Health Care Cost Trend Rate Net Periodic	4.50%	4.50%