Derivatives and Hedging Activities - Schedule of fair value and location of outstanding derivative contracts recorded in consolidated balance sheets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Liability Derivatives:
Total liability derivatives	$ 21.7
Designated as Hedging Instrument
Asset Derivatives:
Total asset derivatives	15.1	$ 12.5
Liability Derivatives:
Total liability derivatives	20.7	28.0
Designated as Hedging Instrument | Other current assets
Asset Derivatives:
Total asset derivatives	6.9	4.7
Designated as Hedging Instrument | Other assets
Asset Derivatives:
Total asset derivatives	8.2	7.8
Designated as Hedging Instrument | Accrued liabilities
Liability Derivatives:
Total liability derivatives	12.5	16.7
Designated as Hedging Instrument | Other liabilities
Liability Derivatives:
Total liability derivatives	8.2	11.3
Designated as Hedging Instrument | Interest Rate Swaps
Asset Derivatives:
Total asset derivatives	1.7	1.9
Liability Derivatives:
Total liability derivatives	0.0	0.0
Designated as Hedging Instrument | Interest Rate Swaps | Other current assets
Asset Derivatives:
Total asset derivatives	0.2	0.3
Designated as Hedging Instrument | Interest Rate Swaps | Other assets
Asset Derivatives:
Total asset derivatives	1.5	1.6
Designated as Hedging Instrument | Interest Rate Swaps | Accrued liabilities
Liability Derivatives:
Total liability derivatives	0.0	0.0
Designated as Hedging Instrument | Interest Rate Swaps | Other liabilities
Liability Derivatives:
Total liability derivatives	0.0	0.0
Designated as Hedging Instrument | Foreign exchange contracts
Asset Derivatives:
Total asset derivatives	0.5	0.8
Liability Derivatives:
Total liability derivatives	1.5	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other current assets
Asset Derivatives:
Total asset derivatives	0.5	0.6
Designated as Hedging Instrument | Foreign exchange contracts | Other assets
Asset Derivatives:
Total asset derivatives	0.0	0.2
Designated as Hedging Instrument | Foreign exchange contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	0.5	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	1.0	0.0
Designated as Hedging Instrument | Commodity contracts
Asset Derivatives:
Total asset derivatives	12.9	9.8
Liability Derivatives:
Total liability derivatives	19.2	28.0
Designated as Hedging Instrument | Commodity contracts | Other current assets
Asset Derivatives:
Total asset derivatives	6.2	3.8
Designated as Hedging Instrument | Commodity contracts | Other assets
Asset Derivatives:
Total asset derivatives	6.7	6.0
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	12.0	16.7
Designated as Hedging Instrument | Commodity contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	$ 7.2	$ 11.3