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, 2021	Jun. 30, 2020
Liability Derivatives:
Total liability derivatives	$ 8.5
Designated as Hedging Instrument
Asset Derivatives:
Total asset derivatives	11.7	$ 10.1
Liability Derivatives:
Total liability derivatives	4.6	17.9
Designated as Hedging Instrument | Other current assets
Asset Derivatives:
Total asset derivatives	6.5	3.6
Designated as Hedging Instrument | Other assets
Asset Derivatives:
Total asset derivatives	5.2	6.5
Designated as Hedging Instrument | Accrued liabilities
Liability Derivatives:
Total liability derivatives	3.0	11.1
Designated as Hedging Instrument | Other liabilities
Liability Derivatives:
Total liability derivatives	1.6	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	2.6	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	2.6	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	11.6	5.3
Liability Derivatives:
Total liability derivatives	2.0	17.9
Designated as Hedging Instrument | Commodity contracts | Other current assets
Asset Derivatives:
Total asset derivatives	6.4	2.2
Designated as Hedging Instrument | Commodity contracts | Other assets
Asset Derivatives:
Total asset derivatives	5.2	3.1
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
Liability Derivatives:
Total liability derivatives	0.4	11.1
Designated as Hedging Instrument | Commodity contracts | Other liabilities
Liability Derivatives:
Total liability derivatives	$ 1.6	$ 6.8