Derivatives and Hedging Activities - Schedule of fair value and location of outstanding derivative contracts recorded in consolidated balance sheets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
Liability Derivatives:
Total liability derivatives	$ 23.8
Designated as Hedging Instrument
Asset Derivatives:
Total asset derivatives	6.7	$ 12.5
Liability Derivatives:
Total liability derivatives	22.2	28.0
Designated as Hedging Instrument | Other current assets
Asset Derivatives:
Total asset derivatives	2.5	4.7
Designated as Hedging Instrument | Other assets
Asset Derivatives:
Total asset derivatives	4.2	7.8
Designated as Hedging Instrument | Accrued liabilities
Liability Derivatives:
Total liability derivatives	14.5	16.7
Designated as Hedging Instrument | Other liabilities
Liability Derivatives:
Total liability derivatives	7.7	11.3
Designated as Hedging Instrument | Interest Rate Swaps
Asset Derivatives:
Total asset derivatives	3.7	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	0.5	0.3
Designated as Hedging Instrument | Interest Rate Swaps | Other assets
Asset Derivatives:
Total asset derivatives	3.2	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	0.9	0.8
Liability Derivatives:
Total liability derivatives	1.0	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other current assets
Asset Derivatives:
Total asset derivatives	0.9	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	0.7	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	0.3	0.0
Designated as Hedging Instrument | Commodity contracts
Asset Derivatives:
Total asset derivatives	2.1	9.8
Liability Derivatives:
Total liability derivatives	21.2	28.0
Designated as Hedging Instrument | Commodity contracts | Other current assets
Asset Derivatives:
Total asset derivatives	1.1	3.8
Designated as Hedging Instrument | Commodity contracts | Other assets
Asset Derivatives:
Total asset derivatives	1.0	6.0
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	13.8	16.7
Designated as Hedging Instrument | Commodity contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	$ 7.4	$ 11.3