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Postretirement Benefits
3 Months Ended
Sep. 30, 2011
Notes to Financial Statements [Abstract] 
Postretirement Benefits
Postretirement Benefits - The Company offers various postretirement benefits to its employees.

The components of net periodic benefit cost for defined benefit plans are as follows:
 
 
Pension Benefits
 
Other Retiree Benefits
 
Three Months Ended September 30
 
Three Months Ended September 30
Amounts in millions
2011
 
2010
 
2011
 
2010
Service cost
$
67

 
$
62

 
$
36

 
$
35

Interest cost
157

 
140

 
69

 
65

Expected return on plan assets
(146
)
 
(119
)
 
(108
)
 
(108
)
Amortization of deferred amounts
6

 
4

 
(5
)
 
(5
)
Recognized net actuarial loss
26

 
37

 
25

 
24

Gross benefit cost (credit)
110

 
124

 
17

 
11

Dividends on ESOP preferred stock
—

 
—

 
(19
)
 
(20
)
Net periodic benefit cost (credit)
$
110

 
$
124

 
$
(2
)
 
$
(9
)

  
For the year ending June 30, 2012, the expected return on plan assets is 7.4% and 9.2% for defined benefit and other retiree benefit plans, respectively.