Financial Instruments (Narrative) (Details) (Interest Rate Swap, USD $) In Millions, unless otherwise specified	0 Months Ended
	Sep. 05, 2012	Jun. 30, 2014	Jun. 30, 2013
Fair Value Hedging
Derivative [Line Items]
Derivative, Notional Amount		$ 1,438	$ 1,138
Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount		300	250
Designated as Hedging Instrument | Fair Value Hedging
Derivative [Line Items]
Derivative, Notional Amount	350	300	775
Derivative, Cash Received on Hedge	43
Designated as Hedging Instrument | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount		$ 50	$ 250