Derivatives and Hedging Activities - Schedule of fair value and location of outstanding derivative contracts recorded in consolidated balance sheets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020
Liability Derivatives:
Total liability derivatives	$ 13.3
Designated as Hedging Instrument
Asset Derivatives:
Total asset derivatives	11.3	$ 10.1
Liability Derivatives:
Total liability derivatives	12.3	17.9
Designated as Hedging Instrument | Other current assets
Asset Derivatives:
Total asset derivatives	6.0	3.6
Designated as Hedging Instrument | Other assets
Asset Derivatives:
Total asset derivatives	5.3	6.5
Designated as Hedging Instrument | Accrued liabilities
Liability Derivatives:
Total liability derivatives	7.0	11.1
Designated as Hedging Instrument | Other liabilities
Liability Derivatives:
Total liability derivatives	5.3	6.8
Designated as Hedging Instrument | Interest Rate Swaps
Asset Derivatives:
Total asset derivatives	0.0	4.0
Liability Derivatives:
Total liability derivatives	0.0	0.0
Designated as Hedging Instrument | Interest Rate Swaps | Other current assets
Asset Derivatives:
Total asset derivatives	0.0	1.2
Designated as Hedging Instrument | Interest Rate Swaps | Other assets
Asset Derivatives:
Total asset derivatives	0.0	2.8
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	0.1	0.8
Liability Derivatives:
Total liability derivatives	0.4	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other current assets
Asset Derivatives:
Total asset derivatives	0.1	0.2
Designated as Hedging Instrument | Foreign exchange contracts | Other assets
Asset Derivatives:
Total asset derivatives	0.0	0.6
Designated as Hedging Instrument | Foreign exchange contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	0.1	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	11.2	5.3
Liability Derivatives:
Total liability derivatives	11.9	17.9
Designated as Hedging Instrument | Commodity contracts | Other current assets
Asset Derivatives:
Total asset derivatives	5.9	2.2
Designated as Hedging Instrument | Commodity contracts | Other assets
Asset Derivatives:
Total asset derivatives	5.3	3.1
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	6.9	11.1
Designated as Hedging Instrument | Commodity contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	$ 5.0	$ 6.8