Inventories - Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Inventory [Line Items]
Excess of FIFO over LIFO cost	$ (51.2)	$ (43.0)
Total LIFO inventories	78.8	53.4
Total FIFO inventories	120.8	107.2
Total inventories	199.6	160.6
Inventories carried at LIFO:
Inventory [Line Items]
Finished goods	78.8	54.0
Raw materials and work-in-process	51.2	42.4
Inventories carried at FIFO:
Inventory [Line Items]
Finished goods	62.8	53.8
Raw materials and work-in-process	$ 58.0	$ 53.4