Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
PENSION AND OTHER POSTRETIREMENT BENEFITS (Estimated Future Benefit Payments) (Details)
$ in Millions
Dec. 31, 2016
USD ($)
Net Company Payments [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 $ 19.1
2018 19.3
2019 18.3
2020 17.5
2021 16.7
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 76.6
Less Medicare Subsidy [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 0.6
2018 0.7
2019 0.8
2020 0.9
2021 0.9
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 5.2
Gross Company Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 19.7
2018 20.0
2019 19.1
2020 18.4
2021 17.6
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 81.8
Pension Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2017 77.3
2018 64.8
2019 63.3
2020 63.0
2021 62.4
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter $ 308.0