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