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, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 600.9 $ 698.4 $ 569.3 $ 461.6 $ 754.0 $ 553.3 $ 496.2 $ 305.5 $ 2,330.2 $ 2,109.0 $ 2,013.3
PROPERTY, PLANT AND EQUIPMENT, NET 1,051.0       984.4       1,051.0 984.4 1,059.0
United States [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 1,504.5 1,236.2 1,206.4
PROPERTY, PLANT AND EQUIPMENT, NET 1,033.8       961.0       1,033.8 961.0 1,012.7
Australia                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
PROPERTY, PLANT AND EQUIPMENT, NET $ 17.2       $ 23.4       17.2 23.4 46.3
China [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 364.7 452.5 370.8
Canada [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 206.2 267.1 282.4
Other Countries [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 $ 254.8 $ 153.2 $ 153.7