Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Programs (Details)

v3.10.0.1
Pension and Other Postretirement Benefit Programs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Domestic Plan | Pension Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost $ 1.0 $ 1.4 $ 2.9 $ 4.1
Interest cost 3.7 3.8 11.0 11.6
Expected return on plan assets (5.6) (5.7) (16.7) (16.9)
Amortization of prior service cost 0.0 0.1 0.0 0.3
Amortization of net actuarial loss (gains) 2.6 2.6 8.0 7.7
Net benefit cost 1.7 2.2 5.2 6.8
Domestic Plan | Other Postretirement Benefits Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 0.1 0.1 0.3 0.3
Interest cost 0.7 0.8 2.0 2.5
Amortization of net actuarial loss (gains) (0.6) (0.6) (1.9) (1.8)
Net benefit cost 0.2 0.3 0.4 1.0
Foreign Plan | Pension Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Interest cost 0.1 0.2 0.4 0.5
Expected return on plan assets (0.2) (0.3) (0.6) (0.7)
Amortization of net actuarial loss (gains) 0.1 0.0 0.2 0.1
Net benefit cost $ 0.0 $ (0.1) $ 0.0 $ (0.1)