Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Inventories carried at LIFO:
Finished goods	$ 52.7	$ 48.6
Raw materials, production parts and work-in-process	33.2	28.6
LIFO reserve	(31.4)	(31.2)
Total LIFO inventories	54.5	46.0
Inventories carried at FIFO:
Inventory, Finished goods, FIFO	63.1	53.5
Raw materials, production parts and work-in-process	41.9	35.6
Total FIFO inventories	105.0	89.1
Total inventories	$ 159.5	$ 135.1