Derivatives and Hedging Activities - Summary of the (losses) gains related to cash flow hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in AOCI on Derivatives	$ (33.4)	$ 9.2
Amount of (Loss) Gain Reclassified from AOCI into Income	(1.7)	(2.9)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in AOCI on Derivatives	(33.6)	9.6
Commodity contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from AOCI into Income	(2.0)	(2.6)
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in AOCI on Derivatives	0.2	(0.4)
Foreign exchange contracts | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from AOCI into Income	0.2	(0.4)
Forward interest rate swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from AOCI into Income	$ 0.1	$ 0.1