Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING (Narrative) (Details)

v3.19.3
SEGMENT REPORTING (Narrative) (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
unit
Sep. 30, 2018
USD ($)
Segment Reporting Information [Line Items]        
Number of Reporting Units | unit     2  
Revenues $ 555.6 $ 741.8 $ 1,455.8 $ 1,636.1
SALES MARGIN 154.9 261.6 448.8 607.6
Mining and Pelletizing [Member]        
Segment Reporting Information [Line Items]        
Revenues 555.6 741.8 1,455.8 1,636.1
SALES MARGIN $ 154.9 $ 261.6 $ 448.8 $ 607.6