Long-Term Debt - U.K. Credit Agreement (Details) £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2023 USD ($)
Debt Instrument
Long-term debt | $	$ 1,852.0		$ 1,629.2
U.K. credit agreement — revolving credit line
Debt Instrument
Maximum credit available		£ 200.0
Additional facility capacity under accordion feature		100.0
Long-term debt	$ 171.4	£ 137.0	$ 0.0
U.K. credit agreement — revolving credit line | Minimum
Debt Instrument
Line of credit basis spread on variable rate (as a percent)	1.10%
U.K. credit agreement — revolving credit line | Maximum
Debt Instrument
Line of credit basis spread on variable rate (as a percent)	2.10%