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Net Income Per Share - Summary of Net Income Per Share (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share [Abstract]            
Net income $ 155.1 $ 140.0 $ 188.5 $ 173.8 $ 295.1 $ 362.3
Weighted average common shares outstanding (in shares) 74.3   74.4   74.4 74.4
Dilutive effect of equity awards, based on the treasury stock method (in shares) 1.1   1.4   1.1 1.5
Weighted average shares assuming dilution (in shares) 75.4   75.8   75.5 75.9