PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Pension Plans, Defined Benefit [Member] | ||||
| Definted Benefit Plan Disclosure [Line Items] | ||||
| Payment for Pension Benefits | $ 3.3 | $ 2.3 | $ 5.6 | $ 2.3 |
| Other Postretirement Benefit Plans, Defined Benefit [Member] | ||||
| Definted Benefit Plan Disclosure [Line Items] | ||||
| OPEB Contributions | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0 |
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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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- Definition Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of payment for pension benefits. Excludes other postretirement benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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