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, 2020	Jun. 30, 2020
Liability Derivatives:
Total liability derivatives	$ 11.7
Designated as Hedging Instrument
Asset Derivatives:
Total asset derivatives	16.2	$ 10.1
Liability Derivatives:
Total liability derivatives	11.1	17.9
Designated as Hedging Instrument | Other current assets
Asset Derivatives:
Total asset derivatives	8.6	3.6
Designated as Hedging Instrument | Other assets
Asset Derivatives:
Total asset derivatives	7.6	6.5
Designated as Hedging Instrument | Accrued liabilities
Liability Derivatives:
Total liability derivatives	7.2	11.1
Designated as Hedging Instrument | Other liabilities
Liability Derivatives:
Total liability derivatives	3.9	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	0.0	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	0.0	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	1.5	0.0
Designated as Hedging Instrument | Foreign exchange contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	0.0	0.0
Designated as Hedging Instrument | Commodity contracts
Asset Derivatives:
Total asset derivatives	16.2	5.3
Liability Derivatives:
Total liability derivatives	9.6	17.9
Designated as Hedging Instrument | Commodity contracts | Other current assets
Asset Derivatives:
Total asset derivatives	8.6	2.2
Designated as Hedging Instrument | Commodity contracts | Other assets
Asset Derivatives:
Total asset derivatives	7.6	3.1
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	5.7	11.1
Designated as Hedging Instrument | Commodity contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	$ 3.9	$ 6.8