Financial Instruments (Schedule of Fair Value Gain Loss Derivative Instrument) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Fair Value Hedging | Interest Rate Swaps
Derivative [Line Items]
Notional Amount	$ 1,963	$ 1,613
Fair Value Gain/(Loss)	34	7
Cash Flow Hedging | Interest Rate Swaps
Derivative [Line Items]
Notional Amount	300	0
Fair Value Gain/(Loss)	(10)	0
Cash Flow Hedging | Foreign Currency Contracts
Derivative [Line Items]
Notional Amount	675	544
Fair Value Gain/(Loss)	(2)	1
Cash Flow Hedging | Commodity Contracts
Derivative [Line Items]
Notional Amount	22	22
Fair Value Gain/(Loss)	$ (3)	$ (3)