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Pension Benefits (Narrative) (Details) (Pension Benefits [Member], USD $)
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Pension Benefits [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Minimum length of investment horizon 10 years    
Plan investments in shares of our common stock $ 0 $ 0  
Curtailment charges 0 0 349,000
Estimated employer contributions to pension plans in next fiscal year $ 1,000,000