Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications Out Of Accumulated Other Comprehensive Income (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2018
USD ($)
Prior service cost  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax $ (0.2)
Recognized actuarial loss  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax 5.4
Accumulated Defined Benefit Plans Adjustment Attributable to Parent  
Amortization of pension and other postretirement plan items:  
Total net periodic benefit cost, before tax 5.2
Total net periodic benefit cost, tax benefit (1.3)
Total net periodic benefit cost, net of tax $ 3.9