Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Amount	$ 95.9	$ 95.9
Accumulated Amortization	(37.2)	(34.2)
Definite-lived intangible assets, Net Carrying Amount	58.7	61.7
Indefinite-lived intangible assets, Net Carrying Amount	2,347.3	2,347.3
Total intangible assets	$ 2,406.0	$ 2,409.0