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EMPLOYEE BENEFIT PLANS (Items Not Yet Recognized as a Component of Postretirement Expense) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Retirement Income [Member]
   
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) $ 247 $ 239
Prior service cost (benefit) 1  
Net deferred income tax (assets) liabilities (92)  
Accumulated other comprehensive loss (income) 156  
Retirement Health Care [Member]
   
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) (29) (29)
Prior service cost (benefit) (9)  
Net deferred income tax (assets) liabilities 14  
Accumulated other comprehensive loss (income) $ (24)