Derivatives and Hedging Activities - Schedule of Fair Value and Location of Outstanding Derivative Contracts Recorded in Consolidated Balance Sheets (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Asset Derivatives:
Derivatives designated as hedging instruments, asset	$ 35.2	$ 14.5
Liability Derivatives:
Derivatives designated as hedging instruments, liability	3.4	19.1
Forward interest rate swaps
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.1	2.2
Liability Derivatives:
Derivatives designated as hedging instruments, liability	2.9	0.0
Foreign exchange contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.4	0.2
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.1	1.0
Commodity contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	34.7	12.1
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.4	18.1
Other current assets
Asset Derivatives:
Derivatives designated as hedging instruments, asset	15.8	7.2
Other current assets | Forward interest rate swaps
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.1	0.6
Other current assets | Foreign exchange contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.4	0.2
Other current assets | Commodity contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	15.3	6.4
Other assets
Asset Derivatives:
Derivatives designated as hedging instruments, asset	19.4	7.3
Other assets | Forward interest rate swaps
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.0	1.6
Other assets | Foreign exchange contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	0.0	0.0
Other assets | Commodity contracts
Asset Derivatives:
Derivatives designated as hedging instruments, asset	19.4	5.7
Accrued liabilities
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.1	13.1
Accrued liabilities | Forward interest rate swaps
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.0	0.0
Accrued liabilities | Foreign exchange contracts
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.1	1.0
Accrued liabilities | Commodity contracts
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.0	12.1
Other liabilities
Liability Derivatives:
Derivatives designated as hedging instruments, liability	3.3	6.0
Other liabilities | Forward interest rate swaps
Liability Derivatives:
Derivatives designated as hedging instruments, liability	2.9	0.0
Other liabilities | Foreign exchange contracts
Liability Derivatives:
Derivatives designated as hedging instruments, liability	0.0	0.0
Other liabilities | Commodity contracts
Liability Derivatives:
Derivatives designated as hedging instruments, liability	$ 0.4	$ 6.0