Financial Instruments (Schedule of gain/(loss) included in AOCI for derivative instruments designated as cash flow hedges) (Details) - Cash Flow Hedging - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Interest Rate Swaps
Derivative [Line Items]
Gain/(loss) included in AOCI for derivative instruments designated as cash flow hedges	$ 0	$ 9
Commodity Contracts
Derivative [Line Items]
Gain/(loss) included in AOCI for derivative instruments designated as cash flow hedges	(3)	1
Foreign Currency Contracts
Derivative [Line Items]
Gain/(loss) included in AOCI for derivative instruments designated as cash flow hedges	$ 2	$ (1)