PENSION & POSTRETIREMENT PLANS - Schedule of Pension and Postretirement Plan Expenses (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Retirement Benefits [Abstract] | ||||
| Service cost | $ 18 | $ 9 | $ 54 | $ 27 |
| Interest cost | 48 | 55 | 144 | 165 |
| Expected return on plan assets | (73) | (74) | (219) | (222) |
| Net amortization | 4 | (14) | 12 | (42) |
| Total | $ (3) | $ (24) | $ (9) | $ (72) |
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- Definition The amount of gain/(loss), transition obligations/(assets) and prior service cost/(credit) recognized in net periodic benefit cost. No definition available.
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- References No definition available.
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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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- 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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