Inventories - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Inventory Disclosure [Abstract]
Percentage of LIFO inventory	51.00%	67.00%
Inventory, LIFO reserve, effect on income	$ 5.5	$ 2.1	$ 0.1
Effect of LIFO inventory liquidations	$ 3.5	$ 1.3	$ 0.0