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Financial Instruments (Schedule of Fair Value Gain Loss Derivative Instrument) (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Jun. 30, 2015
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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)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References 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 + Details
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