Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Change in the carrying amount of goodwill
Balance at the beginning of the period	$ 2,111.1
Acquisitions	59.3
Purchase price allocation adjustments	2.1
Effect of foreign currency translation	(1.6)
Balance at the end of the period	2,170.9
Accumulated impairment losses	$ 0.0	$ 0.0