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LONG-TERM DEBT (Tables)
9 Months Ended
Jul. 31, 2018
Debt Disclosure [Abstract]  
Schedule of Senior Notes and Related Interest Rate Swaps
The following table summarizes the company’s long-term senior notes and the related interest rate swaps:
 
 
July 31, 2018
 
October 31, 2017
 
Amortized Principal
 
Swap
 
Total
 
Amortized
Principal
 
Swap
 
Total
 
(in millions)
2020 Senior Notes
500

 
8

 
508

 
499

 
11

 
510

2022 Senior Notes
398

 

 
398

 
398

 

 
398

2023 Senior Notes
596

 

 
596

 
596

 

 
596

2026 Senior Notes
297

 

 
297

 
297

 

 
297

Total
$
1,791

 
$
8

 
$
1,799

 
$
1,790

 
$
11

 
$
1,801