Note 6 - Inventories - Inventories (Details) - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Excess of FIFO over LIFO cost(b)	[1]	$ (49.0)	$ (43.0)
Total LIFO inventories		69.7	53.4
Total FIFO inventories		118.9	107.2
Total inventories		188.6	160.6
LIFO Inventory [Member]
Finished goods(a)	[2]	68.2	54.0
Raw materials and work-in-process		50.5	42.4
FIFO Inventory [Member]
Finished goods(a)	[2]	58.8	53.8
Raw materials and work-in-process		$ 60.1	$ 53.4

[1] The difference between replacement cost and the stated LIFO inventory value is not materially different from the reserve for the LIFO valuation method.

[2] Finished goods include machines, parts and consumables and component parts that are used in our products.