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Retirement Income And Health Care Benefit Plans (Tables)
3 Months Ended
Sep. 30, 2011
Retirement Income And Health Care Benefit Plans [Abstract] 
Components Of The Net Periodic Benefit Cost Of Retirement Income And Health Care Plans
        Three Months Ended
    9/30/2011       9/30/2010
Service cost   $       1     $       3  
Interest cost     7       7  
Expected return on plan assets       (8 )       (8 )
Amortization of unrecognized items     2       4  
Total   $ 2     $ 6