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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Total shareholders' equity $ 212.6 $ 207.3 $ 209.1 $ 167.1
Cumulative translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Total shareholders' equity (58.4) (65.7)    
Pension plans actuarial loss, net of tax        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Total shareholders' equity (59.5) (73.7)    
Accumulated other comprehensive loss        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Total shareholders' equity $ (117.9) $ (139.4) $ (135.0) $ (165.8)