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BENEFIT PLANS (Amount of Prior Service Cost and Actuarial Loss Included in Accumulated Other Comprehensive Loss that is Expected to Be Recognized in Net Periodic Benefit Cost) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($)
Pension Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Actuarial loss, net of taxes of $4.7 for pension benefits and $0.3 for other benefits | $ 14.9
Prior service cost, net of taxes of $0.1 for pension benefits and $(0.2) for other benefits | 0.4
Actuarial loss, taxes | 4.7
Prior service cost, taxes | 0.1
Other Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Actuarial loss, net of taxes of $4.7 for pension benefits and $0.3 for other benefits | 1.1
Prior service cost, net of taxes of $0.1 for pension benefits and $(0.2) for other benefits | (0.8)
Actuarial loss, taxes | 0.3
Prior service cost, taxes | $ (0.2)

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- Definition Defined Benefit Plan, Actuarial Losses to be Amortized and Reclassified from Accumulated Other Comprehensive Income (Loss) to Net Pension Cost + References No definition available. + Details
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- Definition Amount of tax expense (benefit) of amortization and reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + References No definition available. + Details
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- Definition Defined Benefit Plan, Prior Service Cost to be Amortized and Reclassified from Accumulated Other Comprehensive Income (Loss) to Net Pension Cost + References No definition available. + Details
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- Definition Amount of tax expense (benefit) of amortization and reclassification adjustment from accumulated other comprehensive income (loss) for prior service cost related to pension and other postretirement benefit plans. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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