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Postretirement Benefits (Tables)
 3 Months Ended
Jan. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Net Benefit Costs [Table Text Block]
Net postretirement benefits expense included in our Consolidated Statements of Operations is comprised of the following:
 
Three Months Ended January 31,
 
Pension Benefits
 
Health and Life
Insurance Benefits
(in millions)
2014
 
2013
 
2014
 
2013
Service cost for benefits earned during the period
$
4

 
$
5

 
$
1

 
$
2

Interest on obligation
39

 
36

 
17

 
15

Amortization of cumulative loss
24

 
32

 
4

 
7

Amortization of prior service benefit
—

 
—

 
(1
)
 
(1
)
Expected return on assets
(48
)
 
(47
)
 
(8
)
 
(8
)
Net postretirement benefits expense
$
19

 
$
26

 
$
13

 
$
15