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(Tables)
 3 Months Ended
Jan. 31, 2017
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
 
Three Months Ended January 31,
 
Pension Benefits
 
Health and Life
Insurance Benefits
(in millions)
2017
 
2016
 
2017
 
2016
Service cost for benefits earned during the period
$
2

 
$
2

 
$
1

 
$
1

Interest on obligation
27

 
30

 
12

 
15

Amortization of cumulative loss
29

 
26

 
6

 
8

Contractual termination benefits
1

 
—

 
—

 
—

Premiums on pension insurance
4

 
4

 
—

 
—

Expected return on assets
(40
)
 
(42
)
 
(6
)
 
(6
)
Net periodic benefit expense
$
23

 
$
20

 
$
13

 
$
18