Retirement and Post-Retirement Benefit Plans - Schedule of Estimated Future Benefits Payments for Retirement and Post-Retirement Plans (Details) $ in Millions	Oct. 31, 2020 USD ($)
Post-Retirement Benefit Plans
Fiscal year
2021	$ 47
2022	44
2023	33
2024	27
2025	27
Next five fiscal years to October 31, 2030	131
U.S. \| Defined Benefit Plans
Fiscal year
2021	680
2022	680
2023	682
2024	690
2025	699
Next five fiscal years to October 31, 2030	3,306
Non-U.S. \| Defined Benefit Plans
Fiscal year
2021	43
2022	41
2023	45
2024	50
2025	55
Next five fiscal years to October 31, 2030	$ 323

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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