Derivatives and Hedging Activities - Summary of the Gains (Losses) Related to Cash Flow Hedges (Details) - Cash flow hedges - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ 41.0	$ 9.3	$ (33.3)
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	3.2	(21.9)	(44.0)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	41.4	9.4	(34.0)
Commodity contracts \| Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	3.8	(22.8)	(44.6)
Amount of Gain (Loss) Reclassified from AOCI into Income (Ineffective Portion)	(2.0)	2.0	1.5
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(0.4)	(0.1)	0.7
Foreign exchange contracts \| Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	(1.0)	0.5	0.2
Forward interest rate swaps \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	0.3	0.3	0.3
Amount of (Loss) Gain Reclassified from AOCI into Income (Effective Portion)	$ 0.4	$ 0.4	$ 0.4

The ineffective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
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- Definition

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 220
-SubTopic 10
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