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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Deferred Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |
Realization of deferred revenue | $ 34.6 | $ 0.0
Other Noncurrent Liabilities [Member] |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |
Contract with Customer, Liability, Noncurrent | 25.7 | 38.5
Contract With Customer, Liability, Period Increase (Decrease) | (25.7) | 0.0
Contract with Customer, Liability, Noncurrent | 0.0 | 38.5
Other Current Liabilities [Member] |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |
Contract with Customer, Liability, Current | 22.1 | 21.0
Contract With Customer, Liability, Period Increase (Decrease) | (21.8) | (2.9)
Contract with Customer, Liability, Current | $ 0.3 | $ 18.1

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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
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