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Pension And Other Postretirement Benefit Plans (Tables)
9 Months Ended
Mar. 31, 2012
Components Of Net Periodic Benefit Cost
Postretirement Medical And Life Insurance [Member]
 
Components Of Net Periodic Benefit Cost
000,0 000,0 000,0 000,0
     Postretirement Medical  and
Life Insurance
 

(In millions)

   Third
Quarter

2012
    Third
Quarter
2011
    Nine
Months

2012
    Nine
Months
2011
 

Service cost

   $ 1      $ —        $ 2      $ 1   

Interest cost

     1        1        3        4   

Net amortization and deferral

     (4     (4     (10     (10
  

 

 

   

 

 

   

 

 

   

 

 

 

Net periodic benefit cost (benefit)

   $ (2   $ (3   $ (5   $ (5