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Net Income Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Numerator    
Net income attributable to common stockholders $ 79.7 $ 47.6
Weighted-average number of common shares outstanding used in computing basic net income per share (in shares) 370.7 398.1
Net income per common share, basic (in dollars per share) $ 0.22 $ 0.12
Weighted-average number of common shares outstanding used in computing diluted net income per share (in shares) 372.9 405.4
Net income per common share, diluted (in dollars per share) $ 0.21 $ 0.12
Class A    
Numerator    
Net income attributable to common stockholders $ 61.9 $ 37.7
Weighted-average number of common shares outstanding used in computing basic net income per share (in shares) 288.0 314.7
Net income per common share, basic (in dollars per share) $ 0.22 $ 0.12
Reallocation of net income as a result of conversion of Class B to Class A common stock $ 17.8 $ 9.9
Reallocation of net income to Class B common stock 0.0 0.0
Net income attributable to common stockholders for diluted EPS $ 79.7 $ 47.6
Weighted-average effect of dilutive restricted stock units and awards and employee stock options (in shares) 2.2 7.3
Conversion of Class B to Class A common stock (in shares) 82.7 83.4
Weighted-average number of common shares outstanding used in computing diluted net income per share (in shares) 372.9 405.4
Net income per common share, diluted (in dollars per share) $ 0.21 $ 0.12
Class B    
Numerator    
Net income attributable to common stockholders $ 17.8 $ 9.9
Weighted-average number of common shares outstanding used in computing basic net income per share (in shares) 82.7 83.4
Net income per common share, basic (in dollars per share) $ 0.22 $ 0.12
Reallocation of net income as a result of conversion of Class B to Class A common stock $ 0.0 $ 0.0
Reallocation of net income to Class B common stock (0.1) (0.2)
Net income attributable to common stockholders for diluted EPS $ 17.7 $ 9.7
Weighted-average effect of dilutive restricted stock units and awards and employee stock options (in shares) 0.1 0.1
Conversion of Class B to Class A common stock (in shares) 0.0 0.0
Weighted-average number of common shares outstanding used in computing diluted net income per share (in shares) 82.8 83.5
Net income per common share, diluted (in dollars per share) $ 0.21 $ 0.12