PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Other Potential Benefit Obligations) (Details) - USD ($) $ in Millions |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|---|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | Ìý | Ìý | Ìý |
| Defined Benefit Plan, Plan Assets, Amount | $ 229.1 | $ 215.6 | $ 202.4 |
| Pension Benefits [Member] | Ìý | Ìý | Ìý |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | Ìý | Ìý | Ìý |
| Defined Benefit Plan, Plan Assets, Amount | 687.2 | 749.8 | 685.8 |
| Defined Benefit Plan, Benefit Obligation | (905.7) | (973.1) | (931.6) |
| Defined Benefit Plan, Funded (Unfunded) Status of Plan | (218.5) | (223.3) | Ìý |
| Other Benefits [Member] | Ìý | Ìý | Ìý |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | Ìý | Ìý | Ìý |
| Defined Benefit Plan, Plan Assets, Amount | 240.2 | 262.5 | 253.0 |
| Defined Benefit Plan, Benefit Obligation | (241.9) | (265.9) | $ (264.6) |
| Defined Benefit Plan, Funded (Unfunded) Status of Plan | $ (1.7) | $ (3.4) | Ìý |
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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