Goodwill and Other Intangible Assets - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 399.1	$ 394.4	$ 389.4	$ 386.2
Total other intangible assets, net	559.0	512.0
Total goodwill and other intangible assets, net	$ 958.1	$ 906.4