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, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in AOCI on Derivatives	$ (9.3)	$ 6.6	$ (9.0)	$ (46.4)
Amount of Gain Reclassified from AOCI into Income	2.4	2.4	10.7	1.4
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in AOCI on Derivatives	(9.6)	6.4	(8.3)	(47.2)
Commodity contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from AOCI into Income	2.2	2.1	9.7	0.3
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 (Loss) Gain Recognized in AOCI on Derivatives	0.3	0.2	(0.7)	0.8
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	0.1	0.2	0.7	0.8
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