v2.4.0.8
Pension and Other Postretirement Benefits (Tables)
 9 Months Ended
Jun. 30, 2013
Compensation and Retirement Disclosure [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The components of net periodic benefit cost are as follows:
 
Pension Benefits
 
Other Postretirement Benefits
 
Three Months Ended
June 30,
 
Nine Months Ended
June 30,
 
Three Months Ended
June 30,
 
Nine Months Ended
June 30,
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
(in millions)
Service cost
$
10

 
$
10

 
$
32

 
$
29

 
$
—

 
$
—

 
$
—

 
$
—

Interest cost
9

 
10

 
27

 
30

 
—

 
—

 
—

 
1

Expected return on assets
(16
)
 
(14
)
 
(47
)
 
(41
)
 
—

 
—

 
—

 
—

Amortization of:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Prior service credit
(2
)
 
(2
)
 
(7
)
 
(7
)
 
(1
)
 
—

 
(2
)
 
(2
)
Actuarial loss
8

 
8

 
22

 
24

 
—

 
—

 
—

 
—

Settlement loss
—

 
3

 
—

 
3

 
—

 
—

 
—

 
—

Total net periodic benefit cost
$
9

 
$
15

 
$
27

 
$
38

 
$
(1
)
 
$
—

 
$
(2
)
 
$
(1
)