REVENUE (Deferred Revenue) (Details) - USD ($) $ in Millions |
9 Months Ended | |||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Other Current Liabilities [Member] | ||||
| Deferred Revenue Arrangement [Line Items] | ||||
| Contract with Customer, Liability, Current | $ 18.3 | $ 16.1 | $ 21.0 | $ 23.8 |
| Contract With Customer, Liability, Period Increase (Decrease) | (2.7) | (7.7) | ||
| Other Noncurrent Liabilities [Member] | ||||
| Deferred Revenue Arrangement [Line Items] | ||||
| Contract with Customer, Liability, Noncurrent | 30.0 | 42.8 | $ 38.5 | $ 51.4 |
| Contract With Customer, Liability, Period Increase (Decrease) | $ (8.5) | $ (8.6) | ||
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- Definition Contract With Customer, Liability, Period Increase (Decrease) No definition available.
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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 current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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://www.xbrl.org/2003/role/disclosureRef
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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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