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Capital Stock (Textuals) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Aug. 24, 2015
Equity, Class of Treasury Stock [Line Items]            
Shares repurchased     $ 45.0      
Share Repurchase Programs            
Equity, Class of Treasury Stock [Line Items]            
Shares repurchased (in shares) (less than) 100,000 100,000   100,000 600,000  
Shares repurchased $ 1.0 $ 1.0   $ 10.0 $ 52.0  
2015 Stock Repurchase Program            
Equity, Class of Treasury Stock [Line Items]            
Shares repurchased (in shares) (less than)         500,000  
Shares repurchased         $ 46.0  
Stock repurchase program, authorized amount           $ 500.0
Remaining authorized amount of repurchase $ 182.0     $ 182.0    
Settlement of Employee Tax Withholding Obligations            
Equity, Class of Treasury Stock [Line Items]            
Shares repurchased (in shares) (less than) 100,000 100,000   100,000 100,000  
Shares repurchased $ 1.0 $ 1.0   $ 10.0 $ 6.0