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Earnings Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Numerator    
Net income (controlling interest) $ 134.5 $ 146.0
Income from hypothetical settlement of Redeemable non-controlling interests, net of taxes 0.7 11.7
Interest expense on junior convertible securities, net of taxes 3.4 3.8
Net income (controlling interest), as adjusted $ 138.6 $ 161.5
Denominator    
Average shares outstanding (basic) (in shares) 35.9 39.7
Effect of dilutive instruments:    
Stock options and restricted stock units (in shares) 2.0 1.2
Issuance of shares to settle Redeemable non-controlling interests (in shares) 0.3 4.0
Junior convertible securities (in shares) 1.7 2.0
Average shares outstanding (diluted) (in shares) 39.9 46.9