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PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Fair Values of Other Benefit Plan Assets) (Details) (USD $)
In Millions, unless otherwise specified
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
$ 205.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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$ 188.6us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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$ 200.5us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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| Hedge Funds [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Private Equity Funds [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Real Estate [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Other Benefits [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Other Benefits [Member] | Equity Securities [Member] | U S Large Cap [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Other Benefits [Member] | Equity Securities [Member] | U S Small Mid Cap [Member] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Other Benefits [Member] | Equity Securities [Member] | International [Member] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Other Benefits [Member] | Fixed Income Investments [Member] |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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| Defined Benefit Plan, Fair Value of Plan Assets |
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