Borrowings - Schedule of Aggregate Future Maturities of Long-term Debt at Face Value (Details) $ in Millions	Oct. 31, 2020 USD ($)
Fiscal year
2021	$ 679
2022	1,230
2023	95
2024	45
2025	1,161
Thereafter	3,051
Total	$ 6,261

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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