Annual report pursuant to Section 13 and 15(d)

Pension and Other Postretirement Benefit Programs - Schedule of Change in Benefit Obligation and Change in Plan Assets (Details)

v3.7.0.1
Pension and Other Postretirement Benefit Programs - Schedule of Change in Benefit Obligation and Change in Plan Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
U.S. Defined Benefit Pension Plans      
Change in benefit obligation:      
Benefit obligations as of beginning of period $ 0.0    
Liabilities assumed from separation 365.2    
Service cost 4.3 $ 0.0 $ 0.0
Interest cost 11.7 0.0 0.0
Foreign currency translation adjustment 0.0    
Actuarial (gain) loss (6.2)    
Benefits paid (10.6)    
Benefit obligation as of end of period 364.4 0.0  
Change in plan assets:      
Fair value of plan assets as of beginning of period 0.0    
Assets received from separation 362.2    
Actual return on plan assets 11.6    
Foreign currency translation adjustment 0.0    
Benefits paid (10.6)    
Fair value of plan assets as of end of period 363.2 0.0  
Funded status of the plans (1.2)    
Canadian Defined Benefit Pension Plans      
Change in benefit obligation:      
Benefit obligations as of beginning of period 0.0    
Liabilities assumed from separation 20.2    
Service cost 0.0    
Interest cost 0.5 0.0 0.0
Foreign currency translation adjustment (0.8)    
Actuarial (gain) loss (0.5)    
Benefits paid (2.7)    
Benefit obligation as of end of period 16.7 0.0  
Change in plan assets:      
Fair value of plan assets as of beginning of period 0.0    
Assets received from separation 19.2    
Actual return on plan assets 0.8    
Foreign currency translation adjustment (0.8)    
Benefits paid (2.7)    
Fair value of plan assets as of end of period 16.5 0.0  
Funded status of the plans (0.2)    
Retiree Health and Life Insurance Plans      
Change in benefit obligation:      
Benefit obligations as of beginning of period 3.5 3.1  
Liabilities assumed from separation 82.9 0.0  
Service cost 0.1 0.0 0.0
Interest cost 2.7 0.1 0.1
Plan participants' contributions 1.6 0.0  
Actuarial (gain) loss 1.1 0.3  
Benefits paid (8.3) 0.0  
Benefit obligation as of end of period 83.6 3.5 3.1
Change in plan assets:      
Fair value of plan assets as of beginning of period 0.0 0.0  
Employer contribution 6.7 0.0  
Plan participants' contribution 1.6 0.0  
Benefits paid (8.3) 0.0  
Fair value of plan assets as of end of period 0.0 0.0 $ 0.0
Funded status of the plans $ (83.6) $ (3.5)