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Earnings Per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share Basic And Diluted [Line Items]        
Net income available to common stockholders $ 77.4 $ 53.4 $ 44.2 $ 231.5
Denominator:        
Basic weighted average share outstanding 181,860,026 110,760,339 151,343,397 110,705,182
Diluted average shares outstanding 182,810,399 111,705,102 152,404,830 111,681,644
Net income per share attributable to common shares:        
Basic $ 0.43 $ 0.48 $ 0.29 $ 2.09
Diluted $ 0.42 $ 0.48 $ 0.29 $ 2.07
Share units        
Denominator:        
Effect of dilutive securities 460,400 397,274 545,905 423,767
Employee Stock Option [Member]        
Denominator:        
Effect of dilutive securities 489,973 547,489 515,528 552,695