REVENUE (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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Contract with Customer, Liability, Revenue Recognized | Ìý | Ìý | $ 51.4 | Ìý |
Other current liabilities | $ 113.4 | Ìý | 125.5 | Ìý |
Take or Pay Contracts [Member] | Ìý | Ìý | Ìý | Ìý |
Contract with Customer, Liability | 5.3 | Ìý | 8.2 | Ìý |
Not Designated as Hedging Instrument [Member] | Ìý | Ìý | Ìý | Ìý |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 5.5 | $ 43.8 | Ìý | Ìý |
Other Current Liabilities [Member] | Ìý | Ìý | Ìý | Ìý |
Contract with Customer, Liability | 12.9 | Ìý | 12.9 | Ìý |
Other Liabilities [Member] | Ìý | Ìý | Ìý | Ìý |
Contract with Customer, Liability, Noncurrent | $ 38.5 | $ 51.4 | $ 38.5 | $ 51.4 |
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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