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Net Income Per Share - Schedule of Repurchase of Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |
Share purchased (in shares) | 170,771 |  |  | 77,329 |  |  | 1,409,786 | 753,399
Total cost of repurchases ($ in millions) | $ 52.4 | $ 187.1 | $ 267.0 | $ 27.8 | $ 173.4 | $ 60.1 | $ 506.5 | $ 261.3
Average price per repurchased share (in dollars per share) | $ 306.34 |  |  | $ 360.25 |  |  | $ 359.24 | $ 346.86

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