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PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS (Tables) | 9 Months Ended
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Sep. 30, 2025
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract] |
Components of Net Periodic Benefit Cost | The components of net periodic benefit cost are:
|  | PENSION |
|  | QUARTER ENDED |  |  | YEAR-TO-DATE ENDED |
DOLLAR AMOUNTS IN MILLIONS |  | SEPTEMBER 2025 |  |  | SEPTEMBER 2024 |  |  | SEPTEMBER 2025 |  |  | SEPTEMBER 2024 |
Service cost |  | $ | 5 |  |  | $ | 5 |  |  | $ | 14 |  |  | $ | 15 |
Interest cost |  |  | 30 |  |  |  | 29 |  |  |  | 90 |  |  |  | 87 |
Expected return on plan assets |  |  | (26 | ) |  |  | (31 | ) |  |  | (78 | ) |  |  | (92 | )
Amortization of actuarial loss |  |  | 14 |  |  |  | 12 |  |  |  | 42 |  |  |  | 32 |
Amortization of prior service cost |  |  | — |  |  |  | — |  |  |  | 1 |  |  |  | 1 |
Total net periodic benefit cost – pension |  | $ | 23 |  |  | $ | 15 |  |  | $ | 69 |  |  | $ | 43 |
|  | OTHER POST-EMPLOYMENT BENEFITS |
|  | QUARTER ENDED |  |  | YEAR-TO-DATE ENDED |
DOLLAR AMOUNTS IN MILLIONS |  | SEPTEMBER 2025 |  |  | SEPTEMBER 2024 |  |  | SEPTEMBER 2025 |  |  | SEPTEMBER 2024 |
Interest cost |  | $ | 1 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 3 |
Amortization of actuarial loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1 |
Amortization of prior service credit |  |  | — |  |  |  | (1 | ) |  |  | (1 | ) |  |  | (1 | )
Total net periodic benefit cost – other post-employment benefits |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | $ | 3 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (q) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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