Quarterly report pursuant to Section 13 or 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Narrative) (Details)

v3.5.0.2
PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2016
Pension Plans, Defined Benefit [Member]          
Definted Benefit Plan Disclosure [Line Items]          
Reduction in other postretirement benefit expense $ (2.1)   $ (4.2)    
Total service and interest costs for other post retirement benefit plans 12.0   23.9    
Pension Contributions 0.3 $ 0.3 0.3 $ 4.2  
Other Postretirement Benefit Plans, Defined Benefit [Member]          
Definted Benefit Plan Disclosure [Line Items]          
Reduction in other postretirement benefit expense (0.6)   (1.1)    
Total service and interest costs for other post retirement benefit plans 2.7   5.4    
Other Postretirement Benefit Expense $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Scenario, Forecast [Member] | Pension Plans, Defined Benefit [Member]          
Definted Benefit Plan Disclosure [Line Items]          
Reduction in net periodic benefit expense         $ 8.4
Reduction in other postretirement benefit expense         $ 2.3