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Note 12 - Income Taxes - Schedule of Components of Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total current income taxes	$ 163.9	$ 106.3	$ 115.2
Total deferred income benefits	2.4	(6.1)	(14.3)
Total income tax expense	166.3	100.3	100.9
UNITED KINGDOM
UK	14.3	15.2	10.5
UK	2.2	(4.0)	(10.3)
UNITED STATES
U.S., including state and local	143.2	88.1	95.9
U.S., including state and local	1.0	(2.0)	10.0
Other Foreign Countries [Member]
UK	6.4	3.0	8.8
UK	$ (0.8)	$ 0.0	$ (14.0)

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