Financial Instruments (Schedule of Outstanding Instruments, Cash Flow Hedges) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Derivative [Line Items]
Document Period End Date	Jun. 30, 2017
Cash Flow Hedging | Interest Rate Swaps
Derivative [Line Items]
Notional Amount		$ 300
Cash Flow Hedging | Interest Rate Swaps | Minimum
Derivative [Line Items]
Maturity Date		Jun. 15, 2018
Cash Flow Hedging | Interest Rate Swaps | Maximum
Derivative [Line Items]
Maturity Date		Jun. 15, 2028
Cash Flow Hedging | Foreign Currency Contracts
Derivative [Line Items]
Notional Amount	$ 162	$ 183
Cash Flow Hedging | Foreign Currency Contracts | Minimum
Derivative [Line Items]
Maturity Date	Jul. 15, 2017	Jul. 01, 2016
Cash Flow Hedging | Foreign Currency Contracts | Maximum
Derivative [Line Items]
Maturity Date	Jun. 30, 2018	Jun. 01, 2017
Cash Flow Hedging | Commodity Contracts
Derivative [Line Items]
Notional Amount	$ 17	$ 22
Cash Flow Hedging | Commodity Contracts | Minimum
Derivative [Line Items]
Maturity Date	Jul. 07, 2017	Jul. 31, 2016
Cash Flow Hedging | Commodity Contracts | Maximum
Derivative [Line Items]
Maturity Date	Apr. 07, 2020	Mar. 31, 2019