PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Pension Benefits | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | $ 33 | $ 32 | $ 98 | $ 95 |
| Interest cost | 64 | 61 | 193 | 182 |
| Expected return on plan assets | (80) | (68) | (239) | (205) |
| Amortization of unrecognized gain | 0 | (2) | (1) | (5) |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Other | 0 | 1 | ||
| Total | 17 | 23 | 51 | 68 |
| Other Postretirement Benefits | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 2 | 1 | 5 | 4 |
| Interest cost | 7 | 8 | 21 | 24 |
| Expected return on plan assets | 0 | 0 | (1) | (1) |
| Amortization of unrecognized gain | (7) | (8) | (21) | (23) |
| Amortization of prior service credit | (11) | (22) | (32) | (65) |
| Other | 0 | 0 | ||
| Total | $ (9) | $ (20) | $ (28) | $ (61) |
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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 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 defined benefit plan cost (credit), classified as other. 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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- Details
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- Details
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