Other income, net - Schedule of Components of Other Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest income and other:
Interest and dividends	$ 21.8	$ 21.0	$ 10.9
Securities transactions, net	0.2	0.3	(0.5)
Total	22.0	21.3	10.4
Infrastructure reimbursement	31.7	25.5	16.0
Currency transactions, net	1.6	1.4	11.5
Insurance recoveries	1.4	3.0	2.8
Gain on land sales	0.5	1.5
Other, net	4.6	2.7	3.0
Total	61.8	55.4	43.7
LandWell
Interest income and other:
Infrastructure reimbursement	$ 1.4	$ 0.3	$ 0.8