Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassifications Out Of Accumulated Other Comprehensive Income (Details)

v3.10.0.1
ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassifications Out Of Accumulated Other Comprehensive Income (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2018
USD ($)
Prior service cost  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax $ (0.4)
Recognized actuarial loss  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax 10.8
Accumulated Defined Benefit Plans Adjustment Attributable to Parent  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax 10.4
Total net periodic benefit cost, tax benefit (2.5)
Total net periodic benefit cost, net of tax $ 7.9