Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS (Estimated Future Benefit Payments) (Details)

v3.8.0.1
PENSION AND OTHER POSTRETIREMENT BENEFITS (Estimated Future Benefit Payments) (Details)
$ in Millions
Dec. 31, 2017
USD ($)
Pension Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 $ (69.6)
2018 (66.7)
2019 (66.0)
2020 (65.1)
2021 (65.2)
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter (310.5)
Gross Company Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 (18.9)
2018 (18.0)
2019 (17.4)
2020 (16.9)
2021 (16.7)
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter (81.5)
Less Medicare Subsidy [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 (0.7)
2018 (0.8)
2019 (0.9)
2020 (1.0)
2021 (1.1)
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter (6.6)
Net Company Payments [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 (18.2)
2018 (17.2)
2019 (16.5)
2020 (15.9)
2021 (15.6)
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter $ (74.9)