Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	$ 1,836.3	$ 1,475.6	$ 2,181.1
Cost of sales	1,686.5	1,470.4	1,822.4
Interest expense	44.9	32.7	19.8
Amount of gain (loss) reclassified from AOCI to income	28.7	7.0	12.7
Net Sales
Derivative Instruments, Gain (Loss) [Line Items]
Total gain	0.0	0.0
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Total gain	28.3	6.6
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Total gain	0.4	0.4
Commodity Contract | Net Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	0.0	0.0
Commodity Contract | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	28.3	6.6	11.5
Commodity Contract | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	0.0	0.0
Forward interest rate swaps | Net Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	0.0	0.0
Hedged Item	0.0	0.0
Derivatives designated as hedging instruments	0.0	0.0
Forward interest rate swaps | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	0.0	0.0
Hedged Item	0.0	0.0
Derivatives designated as hedging instruments	0.0	0.0
Forward interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income	0.4	0.4	$ 0.4
Hedged Item	0.0	(2.7)
Derivatives designated as hedging instruments	$ 0.0	$ 2.7