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v3.19.3

REVENUE (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Revenues | $ 555.6 | $ 741.8 | $ 1,455.8 | $ 1,636.1 |  |
Contract with Customer, Liability, Revenue Recognized |  |  | 42.8 |  | $ 51.3 |
Up-front Payment Arrangement [Member] |  |  |  |  |  |
Contract with Customer, Liability | 5.5 |  | 5.5 |  | 8.2 |
Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Revenues | (40.9) | 135.9 | 43.4 | 334.4 |  |
Other Current Liabilities [Member] |  |  |  |  |  |
Contract with Customer, Liability | 12.8 |  | 12.8 |  | 12.8 |
Other Noncurrent Liabilities [Member] |  |  |  |  |  |
Contract with Customer, Liability, Noncurrent | $ 30.0 | $ 42.8 | $ 30.0 | $ 42.8 | $ 38.5 | $ 51.4

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