Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
PENSION AND OTHER POSTRETIREMENT BENEFITS (Estimated Future Benefit Payments) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Defined Benefit Plan Expected Net Periodic Benefit Cost $ 11.9
Pension Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Defined Benefit Plan Expected Net Periodic Benefit Cost 16.3
2016 74.6
2017 63.4
2018 63.0
2019 62.4
2020 62.4
2021-2025 306.8
Other Postretirement Benefit Plan, Defined Benefit [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Defined Benefit Plan Expected Net Periodic Benefit Cost (4.4)
Gross Company Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2016 18.2
2017 18.3
2018 18.3
2019 18.1
2020 17.7
2021-2025 84.7
Less Medicare Subsidy [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2016 0.8
2017 0.9
2018 1.0
2019 1.1
2020 1.2
2021-2025 6.9
Net Company Payments [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2016 17.4
2017 17.4
2018 17.3
2019 17.0
2020 16.5
2021-2025 $ 77.8