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Compensation Related Costs, Postemployment Benefits (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Defined Contribution Plan Disclosure [Line Items]          
Service cost $ 1.2 $ 2.1 $ 2.4 $ 4.3  
Interest cost 3.5 4.4 8.9 8.8  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 3.6 7.7 9.0 15.5  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0.3 0.2 0.6 0.4  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 0.8 (1.4) 1.7 (2.8)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Defined Benefit Plan, Plan Assets, Contributions by Employer 4.3   6.7    
WESCODeferredCompensationPlanMember          
Defined Contribution Plan Disclosure [Line Items]          
Deferred Compensation Liability, Classified, Noncurrent 26.6   26.6   $ 20.3
Pension Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Other Nonoperating Gains (Losses) (0.5) (3.5) (0.7) (7.1)  
UNITED STATES          
Defined Contribution Plan Disclosure [Line Items]          
Service cost 0.0 0.0 0.0 0.0  
Interest cost 0.6 2.1 3.2 4.2  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 0.6 3.5 3.0 7.0  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0.0 0.0 0.0 0.0  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 0.0 (1.4) 0.2 (2.8)  
Foreign Plan          
Defined Contribution Plan Disclosure [Line Items]          
Service cost 1.2 2.1 2.4 4.3  
Interest cost 2.9 2.3 5.7 4.6  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 3.0 4.2 6.0 8.5  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0.3 0.2 0.6 0.4  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 0.8 $ 0.0 $ 1.5 $ 0.0