COMMITMENTS AND CONTINGENCIES - Contingencies (Details) - USD ($) $ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Environmental obligations | $ 40.9 | $ 2.0 |
| Less current portion | 6.4 | 0.3 |
| Long-term environmental obligations | 34.5 | $ 1.7 |
| Hamilton Plant [Member] | Ìý | Ìý |
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Environmental obligations | 0.7 | Ìý |
| Ashland Works Coke Plant [Member] | Ìý | Ìý |
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Environmental obligations | $ 1.4 | Ìý |
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer. 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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