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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Service cost | $ 32 | $ 34
Interest cost | 61 | 57
Expected return on plan assets | (68) | (69)
Amortization of unrecognized (gain) loss | (2) | 5
Amortization of prior service credit | 0 | 0
Total | 23 | 27
Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Service cost | 1 | 1
Interest cost | 8 | 10
Expected return on plan assets | 0 | 0
Amortization of unrecognized (gain) loss | (8) | (7)
Amortization of prior service credit | (22) | (23)
Total | $ (21) | $ (19)

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