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Note 12 - Income Taxes - Schedule of Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income before taxes	$ 611.9	$ 527.0	$ 375.4
UNITED KINGDOM
UK	57.4	86.4	(44.1)
UNITED STATES
U.S.	595.6	423.4	428.7
Other Foreign Countries [Member]
UK	$ (41.1)	$ 17.2	$ (9.2)

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