Financial Instruments (Schedule of Fair Value Gain Loss Derivative Instrument) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Interest Rate Swaps | Fair Value Hedging
Derivative [Line Items]
Notional Amount	$ 1,613	$ 1,438
Fair Value Gain/(Loss)	7	0
Interest Rate Swaps | Cash Flow Hedging
Derivative [Line Items]
Notional Amount	0	300
Fair Value Gain/(Loss)	0	9
Foreign Currency Contracts | Cash Flow Hedging
Derivative [Line Items]
Notional Amount	544	643
Fair Value Gain/(Loss)	1	0
Commodity Contracts | Cash Flow Hedging
Derivative [Line Items]
Notional Amount	22	24
Fair Value Gain/(Loss)	$ (3)	$ 1