Inventories (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Inventories carried at LIFO:
Finished goods		$ 51.3	$ 50.9
Raw materials, production parts and work-in-process		31.2	32.5
LIFO reserve	[1]	(32.0)	(33.4)
Total LIFO inventories		50.5	50.0
Inventories carried at FIFO:
Inventory, Finished goods, FIFO		60.4	60.1
Raw materials, production parts and work-in-process		44.3	40.0
Total FIFO inventories		104.7	100.1
Total inventories		$ 155.2	$ 150.1

[1] ^(a)   Inventories of $50.5 million as of March 31, 2020, and $50.0 million as of December 31, 2019, were valued at LIFO. The difference between replacement cost and the stated LIFO inventory value is not materially different from the reserve for the LIFO valuation method.