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Annual report pursuant to Section 13 and 15(d)

SEGMENTS REPORTING (Revenue by Geographical Location) (Details)

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SEGMENTS REPORTING (Revenue by Geographical Location) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues $ 534.1 $ 555.6 $ 743.2 $ 157.0 $ 696.3 $ 741.8 $ 714.3 $ 180.0 $ 1,989.9 $ 2,332.4 $ 1,866.0
Property, plant and equipment, net 1,929.0 Ìý Ìý Ìý 1,286.0 Ìý Ìý Ìý 1,929.0 1,286.0 Ìý
United States [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues from External Customers and Long-Lived Assets [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 1,505.2 1,847.3 1,504.5
Property, plant and equipment, net $ 1,929.0 Ìý Ìý Ìý $ 1,286.0 Ìý Ìý Ìý 1,929.0 1,286.0 1,033.8
Canada [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues from External Customers and Long-Lived Assets [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 448.1 395.1 206.2
Other Countries [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues from External Customers and Long-Lived Assets [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revenues Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ 36.6 $ 90.0 $ 155.3