Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Balance as of January 1	$ 19.3	$ 18.7	$ 18.4
Additions/reductions for current year and prior year	0.4	0.6	0.3
Balance as of December 31	$ 19.7	$ 19.3	$ 18.7