Derivatives and Hedging Activities - Summary of the gains (losses) related to cash flow hedges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	$ 3.5	$ (9.3)	$ 26.5	$ (9.0)
Amount of Gain Reclassified from AOCI into Income	1.5	2.4	6.9	10.7
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	3.4	(9.6)	26.5	(8.3)
Commodity contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	1.4	2.2	6.6	9.7
Commodity contracts | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Commodity contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	0.1	0.3	0.0	(0.7)
Foreign exchange contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Foreign exchange contracts | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.1	0.0	0.7
Foreign exchange contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Forward interest rate swaps | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Forward interest rate swaps | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	0.0	0.0	0.0	0.0
Forward interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	$ 0.1	$ 0.1	$ 0.3	$ 0.3