Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Programs (Details)

v3.21.2
Pension and Other Postretirement Benefit Programs (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position $ 6.1   $ 6.1   $ 1.1
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year 1.9   1.9    
Pension Plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment 0.2 $ 0.0 0.0 $ 0.0  
U.S. | Pension Plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Service cost 0.3 0.7 0.5 1.3  
Interest cost 2.5 3.1 5.1 6.2  
Expected return on plan assets (5.4) (5.4) (10.6) (10.7)  
Amortization of net actuarial loss (gains) 0.8 2.5 1.5 5.1  
Net benefit cost (1.8) 0.9 (3.5) 1.9  
U.S. | Other Postretirement Benefits Plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Interest cost 0.4 0.5 0.7 1.0  
Amortization of prior service credits 0.2 (0.1) 0.5 (0.2)  
Amortization of net actuarial loss (gains) (0.4) (1.2) (0.7) (2.4)  
Net benefit cost (0.2) (0.8) (0.5) (1.6)  
Foreign Plan | Pension Plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Interest cost 0.1 0.1 0.2 0.2  
Expected return on plan assets (0.2) (0.2) (0.3) (0.3)  
Amortization of net actuarial loss (gains) 0.1 0.1 0.1 0.2  
Net benefit cost $ 0.2 $ 0.0 $ 0.0 $ 0.1