Revenue - Contracts Assets and Liabilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Contract With Customer, Asset [Roll Forward]
Contract assets, December 31, 2023	$ 21.5
Contract assets, December 31, 2024	23.3
Change in contract assets - increase (decrease)	1.8
Contract With Customer, Liability [Roll Forward]
Deferred income, December 31, 2023	(53.9)
Deferred income, December 31, 2024	(53.2)
Change in deferred income - decrease (increase)	$ 0.7