Goodwill and Other Identifiable Intangible Assets - Indefinite-life Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Indefinite-lived Intangible Assets [Line Items]
Amortization	$ 41.1	$ 28.2
Cost	2,521.9		$ 2,522.9
Accumulated amortization	(687.2)		(646.4)
Net	1,834.7		1,876.5
Trade names
Indefinite-lived Intangible Assets [Line Items]
Indefinite-life intangibles	$ 367.6		$ 367.6