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POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - WEIGHTED AVERAGE ASSUMPTIONS FOR THE BENEFIT CALCULATIONS AS WELL AS ASSUMED HEALTH CARE TREND RATES (DETAILS)
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Pension Benefits
     
ASSUMPTIONS USED TO DETERMINE BENEFIT OBLIGATIONS      
Discount rate 3.50% [1] 4.00% [1]  
Rate of compensation increase 3.20% [1] 3.20% [1]  
ASSUMED HEALTH CARE COST TREND RATES      
Health care cost trend rates assumed for next year 0.00% [1] 0.00% [1]  
Rate to which the health care cost trend rate is assumed to decline (ultimate trend rate) 0.00% [1] 0.00% [1]  
ASSUMPTIONS USED TO DETERMINE NET PERIODIC BENEFIT COST      
Discount rate 4.00% [2] 4.20% [2] 5.30% [2]
Expected long-term rates of return for plan assets 7.20% [2] 7.30% [2] 7.40% [2]
Rate of compensation increase 3.20% [2] 3.30% [2] 3.50% [2]
Other Retiree Benefits
     
ASSUMPTIONS USED TO DETERMINE BENEFIT OBLIGATIONS      
Discount rate 4.40% [1] 4.80% [1]  
Rate of compensation increase 0.00% [1] 0.00% [1]  
ASSUMED HEALTH CARE COST TREND RATES      
Health care cost trend rates assumed for next year 6.80% [1] 7.30% [1]  
Rate to which the health care cost trend rate is assumed to decline (ultimate trend rate) 5.00% [1] 5.00% [1]  
Year that the rate reaches the ultimate trend rate 2021 [1] 2020 [1]  
ASSUMPTIONS USED TO DETERMINE NET PERIODIC BENEFIT COST      
Discount rate 4.80% [2] 4.30% [2] 5.70% [2]
Expected long-term rates of return for plan assets 8.30% [2] 8.30% [2] 9.20% [2]
Rate of compensation increase 0.00% [2] 0.00% [2] 0.00% [2]
Equity Securities [Member]
     
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Range Maximum 9.00%    
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Range Minimum 8.00%    
Bonds
     
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Range Maximum 6.00%    
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Range Minimum 5.00%    
[1] (1) Determined as of end of year.
[2] Determined as of beginning of year and adjusted for acquisitions.