RESTRUCTURING (Tables)
 6 Months Ended
Apr. 30, 2017
Restructuring Cost and Reserve [Line Items]  
Restructuring and Related Costs [Table Text Block]
A summary of balances and restructuring activity is shown in the table below:
 
Workforce reduction
 
(in millions)
Balance as of October 31, 2016
$
—

Income statement expense
2

Cash payments
—

Balance as of January 31, 2017
$
2

Income statement expense
1

Cash payments
(2
)
Balance as of April 30, 2017
$
1
Restructuring And Related Charges By Statement Of Operations Caption [Table Text Block]
A summary of the charges in the consolidated statement of operations resulting from all restructuring plans is shown below:
 
Three Months Ended
 
Six Months Ended
 
April 30,
 
April 30,
 
2017
 
2016
 
2017
 
2016
 
(in millions)
 
 
 
 
Cost of products and services
$
—

 
$
—

 
$
1

 
$
—

Research and development
1

 
—

 
1

 
—

Selling, general and administrative
—

 
—

 
1

 
—

Total restructuring and other related costs
$
1

 
$
—

 
$
3

 
$
—