PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Plan Asset) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	$ (776,482)
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	738,296	$ 776,482
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract
Pension and other postretirement liabilities	(6,528)	(5,060)
Accrued pension and other postretirement benefit costs	(101,227)	(121,043)
Pension Plan [Member]
DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	(776,482)	(714,608)
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	(44,876)	94,960
Contributions made by employer	55,311	4,561
DefinedBenefitPlanContributionsByPlanParticipants	1,402	1,655
DefinedBenefitPlanBenefitsPaid	(44,190)	(45,384)
DefinedBenefitPlanSettlementsPlanAssets	(1,371)	(1,301)
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	(4,462)	7,383
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	738,296	776,482
DefinedBenefitPlanFundedStatusOfPlan	(76,598)	(92,405)
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract
Assets for Plan Benefits, Defined Benefit Plan	9,098	8,663
Pension and other postretirement liabilities	(4,905)	(3,374)
Accrued pension and other postretirement benefit costs	(80,791)	(97,694)
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	(76,598)	(92,405)
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	228,430	201,390
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	(1,225)	(1,461)
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	227,205	199,929
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract
DefinedBenefitPlanAmortizationOfNetGainsLosses	10,368	15,615
DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit	(284)	(250)
DefinedBenefitPlanAccumulatedBenefitObligation	784,205	834,745
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	743,632	785,039
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	714,146	752,371
DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	658,327	684,756
Assets for Plan Benefits, Defined Benefit Plan	9,098	8,663
Other Postretirement Benefits Plan [Member]
DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Contributions made by employer	2,203	2,654
DefinedBenefitPlanContributionsByPlanParticipants	319	253
DefinedBenefitPlanBenefitsPaid	(2,522)	(2,907)
DefinedBenefitPlanFundedStatusOfPlan	(22,060)	(25,035)
DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract
Pension and other postretirement liabilities	(1,623)	(1,686)
Accrued pension and other postretirement benefit costs	(20,437)	(23,349)
DefinedBenefitPlanAmountsRecognizedInBalanceSheet	(22,060)	(25,035)
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	(4,751)	(2,899)
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	(2,060)	(2,718)
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	(6,811)	(5,617)
DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract
DefinedBenefitPlanAmortizationOfNetGainsLosses	131	(29)
DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit	$ (657)	$ (657)