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LONG-TERM DEBT (Tables)
12 Months Ended
Oct. 31, 2020
Debt Disclosure [Abstract]  
Long-term debt - Senior Notes
The following table summarizes the company's long-term senior notes:

 October 31, 2020October 31, 2019
 Amortized
Principal
Amortized
Principal
 (in millions)
2022 Senior Notes$400 $399 
2023 Senior Notes598 597 
2026 Senior Notes298 298 
2029 Senior Notes493 492 
2030 Senior Notes495 — 
Total$2,284 $1,786