v2.4.0.8
Risk Management Activities and Fair Value Measurements - Fair Value (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Jun. 30, 2013
Fair Value, Inputs, Level 1 [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded & not recorded at fair value $ 23,865 $ 22,671
Fair Value, Inputs, Level 1 [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Total assets recorded at fair value 31 [1] 23 [1]
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded at fair value 0 [2] 0 [2]
Fair Value, Inputs, Level 1 [Member] | Portion at Other than Fair Value, Fair Value Disclosure [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Long-term Debt, Fair Value 23,865 [3] 22,671 [3]
Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 0 0
Fair Value, Inputs, Level 1 [Member] | Other Investments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 31 23
Fair Value, Inputs, Level 1 [Member] | Foreign Exchange Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 1 [Member] | Other Foreign Currency Instruments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 [4] 0 [4]
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 [4] 0 [4]
Fair Value, Inputs, Level 1 [Member] | Interest Rate Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Fair Value, Inputs, Level 1 [Member] | Net Investment Hedging [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 2 [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded & not recorded at fair value 3,194 3,171
Fair Value, Inputs, Level 2 [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Total assets recorded at fair value 2,170 [1] 2,182 [1]
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded at fair value 102 [2] 149 [2]
Fair Value, Inputs, Level 2 [Member] | Portion at Other than Fair Value, Fair Value Disclosure [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Long-term Debt, Fair Value 3,092 [3] 3,022 [3]
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 1,580 1,571
Fair Value, Inputs, Level 2 [Member] | Other Investments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 0 0
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 164 168
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 2 [Member] | Other Foreign Currency Instruments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 35 [4] 19 [4]
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 37 [4] 90 [4]
Fair Value, Inputs, Level 2 [Member] | Interest Rate Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 167 191
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 64 [4] 59 [4]
Fair Value, Inputs, Level 2 [Member] | Net Investment Hedging [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 224 233
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 1 0
Fair Value, Inputs, Level 3 [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded & not recorded at fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Total assets recorded at fair value 24 [1] 24 [1]
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded at fair value 0 [2] 0 [2]
Fair Value, Inputs, Level 3 [Member] | Portion at Other than Fair Value, Fair Value Disclosure [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Long-term Debt, Fair Value 0 [3] 0 [3]
Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 0 0
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 24 24
Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Fair Value, Inputs, Level 3 [Member] | Other Foreign Currency Instruments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 [4] 0 [4]
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 [4] 0 [4]
Fair Value, Inputs, Level 3 [Member] | Interest Rate Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Fair Value, Inputs, Level 3 [Member] | Net Investment Hedging [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Estimate of Fair Value, Fair Value Disclosure [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded & not recorded at fair value 27,059 25,842
Estimate of Fair Value, Fair Value Disclosure [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Total assets recorded at fair value 2,225 [1] 2,229 [1]
Liabilities, Fair Value Disclosure [Abstract]    
Liabilities recorded at fair value 102 [2] 149 [2]
Estimate of Fair Value, Fair Value Disclosure [Member] | Portion at Other than Fair Value, Fair Value Disclosure [Member]
    
Liabilities, Fair Value Disclosure [Abstract]    
Long-term Debt, Fair Value 26,957 [3] 25,693 [3]
Estimate of Fair Value, Fair Value Disclosure [Member] | US Treasury and Government [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 1,580 1,571
Estimate of Fair Value, Fair Value Disclosure [Member] | Other Investments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Investment securities 55 47
Estimate of Fair Value, Fair Value Disclosure [Member] | Foreign Exchange Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 164 168
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 0 0
Estimate of Fair Value, Fair Value Disclosure [Member] | Other Foreign Currency Instruments [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 35 [4] 19 [4]
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 37 [4] 90 [4]
Estimate of Fair Value, Fair Value Disclosure [Member] | Interest Rate Contract [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 167 191
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities 64 [4] 59 [4]
Estimate of Fair Value, Fair Value Disclosure [Member] | Net Investment Hedging [Member] | Portion at Fair Value, Fair Value Disclosure [Member]
    
Assets, Fair Value Disclosure [Abstract]    
Derivative assets 224 233
Liabilities, Fair Value Disclosure [Abstract]    
Derivative liabilities $ 1 $ 0
[1] The amortized cost of the U.S. government securities was $1,604 as of September 30, 2013 and June 30, 2013. All U.S. government securities have contractual maturities between one and five years. Fair values are generally estimated based upon quoted market prices for similar instruments.
[2] All liabilities are presented in accrued and other liabilities or other noncurrent liabilities.
[3] Long-term debt includes the current portion ($2,064 and $4,540 as of September 30, 2013 and June 30, 2013, respectively) of debt instruments. Long-term debt is not recorded at fair value on a recurring basis, but is measured at fair value for disclosure purposes. Fair values are generally estimated based on quoted market prices for identical or similar instruments.
[4] Other foreign currency instruments are comprised of foreign currency financial instruments that do not qualify as hedges.