Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	$ 1,836.3	$ 2,550.3	$ 1,836.3	$ 1,475.6
Cost of sales		2,213.0	1,686.5	1,470.4
Interest expense		54.1	44.9	32.7
Amount of gain (loss) reclassified from AOCI to income		7.7	28.7	7.0
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		7.7	28.3
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Total gain		0.0	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		7.7	28.3	6.6
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
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
Forward interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) reclassified from AOCI to income		$ 0.0	$ 0.4	$ 0.4