Annual report pursuant to Section 13 and 15(d)

SEGMENT REPORTING (Narrative) (Details)

v3.19.3.a.u2
SEGMENT REPORTING (Narrative) (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
unit
customer
Dec. 31, 2018
USD ($)
customer
Dec. 31, 2017
USD ($)
customer
Segment Reporting Information [Line Items]                      
Number of Reporting Units | unit                 2    
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
Revenue Benchmark [Member] | Customer Concentration Risk [Member]                      
Segment Reporting Information [Line Items]                      
Number of Customers | customer                 3 3 3
Concentration Risk, Percentage                 10.00% 10.00% 10.00%
Revenues                 $ 1,800.0 $ 2,100.0 $ 1,500.0