Retirement Benefit Plans (Details) - Benefit Plans - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2025 |
Jul. 31, 2024 |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||||||||
| Service cost | $ 13 | $ 12 | $ 37 | $ 36 | |||||
| Interest cost | [1] | 96 | 101 | 274 | 304 | ||||
| Expected return on plan assets | (157) | [1] | (136) | (452) | [1] | (410) | [1] | ||
| Amortization and deferrals: | |||||||||
| Actuarial loss | [1] | 34 | 37 | 96 | 111 | ||||
| Prior service benefit | [1] | (1) | (2) | (3) | (6) | ||||
| Net periodic benefit (credit) cost | (15) | 12 | (48) | 35 | |||||
| Settlement loss and special termination benefits | [1] | 4 | 1 | 7 | 3 | ||||
| Total net benefit (credit) cost | $ (11) | $ 13 | $ (41) | $ 38 | |||||
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- Definition Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement and Special Termination Benefits No definition available.
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- Definition The total amount of net periodic benefit cost (credit) for defined benefit plans for the period, before gain or loss due to settlements or curtailments. No definition available.
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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