Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Common Share Repurchase Program (Details)

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Stockholders' Equity Common Share Repurchase Program (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Class of Stock [Line Items]        
Number of shares of common stock repurchased during period (in shares) 0 0    
Repurchase of common stock $ 0.0 $ 0.0    
Common Stock [Member]        
Class of Stock [Line Items]        
Number of shares authorized to be repurchased under stock repurchase program (in shares) 37,500,000   37,500,000  
Number of shares repurchased and retired to date (in shares) 12,174,300   12,174,300  
Cost of shares repurchased and retired to date $ 201.5   $ 201.5  
Number of shares of common stock repurchased during period (in shares)     0 0
Repurchase of common stock     $ 0.0 $ 0.0