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LONG-TERM DEBT (Tables)
12 Months Ended
Oct. 31, 2019
Debt Disclosure [Abstract]  
Schedule of Interest Rate Swaps pertaining to Senior Notes offered
The following table summarizes the company's long-term senior notes and the related interest rate swaps:

 
October 31, 2019
 
October 31, 2018
 
Amortized
Principal
 
Swap
 
Total
 
Amortized
Principal
 
Swap
 
Total
 
(in millions)
2020 Senior Notes
$

 
$

 
$

 
$
499

 
$
7

 
$
506

2022 Senior Notes
399

 

 
399

 
399

 

 
399

2023 Senior Notes
597

 

 
597

 
597

 

 
597

2026 Senior Notes
298

 

 
298

 
297

 

 
297

2029 Senior Notes
492

 

 
492

 

 

 

Total
$
1,786

 
$

 
$
1,786

 
$
1,792

 
$
7

 
$
1,799