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SHARE-BASED COMPENSATION (Tables)
9 Months Ended
Jul. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Allocated Share-based compensation expense disclosure

Three Months Ended
 
Nine Months Ended

July 31,
 
July 31,
 
2020
 
2019
 
2020
 
2019
 
(in millions)
Cost of products and services
$
4

 
$
2

 
$
13

 
$
11

Research and development
4

 
4

 
15

 
13

Selling, general and administrative
11

 
10

 
45

 
42

Total share-based compensation expense
$
19

 
$
16

 
$
73

 
$
66