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POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - FAIR VALUE OF PLAN ASETS (DETAILS) (USD $)
In Millions
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Pension Benefits
      
Fair value of plan assets $ 7,962 [1] $ 6,562 [1] $ 6,310 [1]
Pension Benefits | Cash and Cash Equivalents
      
Fair value of plan assets 189 238  
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
      
Fair value of plan assets 189 238  
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Pension Benefits | Government Bonds
      
Fair value of plan assets 68 62  
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 1
      
Fair value of plan assets 68 62  
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Pension Benefits | Company Stock
      
Fair value of plan assets 11 12  
Pension Benefits | Company Stock | Fair Value, Inputs, Level 1
      
Fair value of plan assets 11 12  
Pension Benefits | Company Stock | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Pension Benefits | Company Stock | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Pension Benefits | Common Collective Trust Fund - Equity
      
Fair value of plan assets 3,612 2,814  
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 2
      
Fair value of plan assets 3,612 2,814  
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Pension Benefits | Common Collective Trust Fund - Fixed Income
      
Fair value of plan assets 4,027 3,380  
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 2
      
Fair value of plan assets 4,027 3,380  
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Pension Benefits | Other Assets
      
Fair value of plan assets 55 56  
Pension Benefits | Other Assets | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Pension Benefits | Other Assets | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Pension Benefits | Other Assets | Fair Value, Inputs, Level 3
      
Fair value of plan assets 55 56  
Pension Benefits | Fair Value, Inputs, Level 1
      
Fair value of plan assets 268 312  
Pension Benefits | Fair Value, Inputs, Level 2
      
Fair value of plan assets 7,639 6,194  
Pension Benefits | Fair Value, Inputs, Level 3
      
Fair value of plan assets 55 56  
Other Retiree Benefits
      
Fair value of plan assets 2,975 [2] 2,843 [2] 2,394 [2]
Other Retiree Benefits | Cash and Cash Equivalents
      
Fair value of plan assets 43 14  
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
      
Fair value of plan assets 43 14  
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Company Stock
      
Fair value of plan assets 2,655 2,535  
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 2
      
Fair value of plan assets 2,655 2,535  
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Common Collective Trust Fund - Equity
      
Fair value of plan assets 41 43  
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 2
      
Fair value of plan assets 41 43  
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income
      
Fair value of plan assets 232 249  
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 2
      
Fair value of plan assets 232 249  
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 3
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Other Assets
      
Fair value of plan assets 4 2  
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 1
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 2
      
Fair value of plan assets 0 0  
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 3
      
Fair value of plan assets 4 2  
Other Retiree Benefits | Fair Value, Inputs, Level 1
      
Fair value of plan assets 43 14  
Other Retiree Benefits | Fair Value, Inputs, Level 2
      
Fair value of plan assets 2,928 2,827  
Other Retiree Benefits | Fair Value, Inputs, Level 3
      
Fair value of plan assets $ 4 $ 2  
[1] Primarily non-U.S.-based defined benefit retirement plans.
[2] Primarily U.S.-based other postretirement benefit plans.