Financial Instruments (Schedule of Fair Value Gain Loss Derivative Instrument) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Fair Value Hedging \| Interest Rate Swaps
Derivative [Line Items]
Notional Amount	$ 2,313	$ 1,813
Fair Value Gain/(Loss)	(78)	(19)
Cash Flow Hedging \| Foreign Currency Contracts
Derivative [Line Items]
Notional Amount	674	720
Fair Value Gain/(Loss)	0	1
Cash Flow Hedging \| Commodity Contracts
Derivative [Line Items]
Notional Amount	12	17
Fair Value Gain/(Loss)	$ 0	$ (1)

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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