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POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - AMOUNTS EXPECTED TO BE AMORTIZED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET PERIODIC BENEFIT COST (DETAILS) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2013
Pension Plans, Defined Benefit [Member]
 
Net actuarial loss $ 210
Prior service cost (credit) 24
Other Retiree Benefits
 
Net actuarial loss 118
Prior service cost (credit) $ (20)