Annual report pursuant to Section 13 and 15(d)

Postretirement Benefits Benefit Obligations, Plan Assets and Funded Status (Details)

v3.22.0.1
Postretirement Benefits Benefit Obligations, Plan Assets and Funded Status (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Pension Plans [Member]      
Change in Benefit Obligations [Roll Forward]      
Benefit Obligation at Previous December 31 $ 27.5 $ 28.1  
Interest Cost 0.4 0.7 $ 6.0
Actuarial (Gains) Losses 0.0 2.1  
Benefit Payments (3.2) (3.4)  
Benefit Obligation at December 31 24.7 27.5 28.1
Change in Plan Assets [Roll Forward]      
Fair Value of Plan Assets at Previous December 31 0.0 10.6  
Employer Contributions 3.2 3.4  
Benefit Payments (3.2) (3.4)  
Defined Benefit Plan, Plan Assets, Adjustments 0.0 (10.6) [1]  
Fair Value of Plan Assets at December 31 0.0 0.0 10.6
Funded Status at December 31 (24.7) (27.5)  
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]      
Liability, Defined Benefit Plan, Current 3.0 3.0  
Liability, Defined Benefit Plan, Noncurrent 21.7 24.5  
Liability, Defined Benefit Plan 24.7 27.5  
Other Postretirement Benefit Plans [Member]      
Change in Benefit Obligations [Roll Forward]      
Benefit Obligation at Previous December 31 33.2 33.0  
Interest Cost 0.0 0.8 1.3
Actuarial (Gains) Losses (1.8) 1.8  
Benefit Payments (2.0) (2.4)  
Benefit Obligation at December 31 29.4 33.2 33.0
Change in Plan Assets [Roll Forward]      
Fair Value of Plan Assets at Previous December 31 0.0 0.0  
Employer Contributions 2.0 2.4  
Benefit Payments (2.0) (2.4)  
Defined Benefit Plan, Plan Assets, Adjustments 0.0 0.0  
Fair Value of Plan Assets at December 31 0.0 0.0 $ 0.0
Funded Status at December 31 (29.4) (33.2)  
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]      
Liability, Defined Benefit Plan, Current 3.1 3.1  
Liability, Defined Benefit Plan, Noncurrent 26.3 30.1  
Liability, Defined Benefit Plan 29.4 33.2  
Nonqualified Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation 24.7 27.5  
Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation $ 16.2 $ 17.1  
[1] (A) 2020 adjustment represents the over funded position of the Company's salaried bargaining plans refunded during the year.