Revenue - Contracts and Liabilities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Contract With Customer, Asset [Roll Forward]
Contract assets, December 31, 2024	$ 23.3
Contract assets, September 30, 2025	27.5
Change in contract assets - increase (decrease)	4.2
Contract With Customer, Liability [Roll Forward]
Deferred income, December 31, 2024	(53.2)
Deferred income, September 30, 2025	(47.3)
Change in deferred income - decrease (increase)	$ 5.9