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POSTRETIREMENT BENEFIT PLANS Postretirement Textuals (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Defined Benefit Plan, Contributions by Employer $ 2.6us-gaap_DefinedBenefitPlanContributionsByEmployer $ 2.1us-gaap_DefinedBenefitPlanContributionsByEmployer
Reclassification of Postretirement Costs from AOCI, Net of Tax 0.5us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax 0.6us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax
Minimum [Member]    
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year 10us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Maximum [Member]    
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year $ 15us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear
/ us-gaap_RangeAxis
= us-gaap_MaximumMember