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v3.23.3

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Pension Plan [Member] |  |  |  |
Defined Benefit Plan Disclosures [Line Items] |  |  |  |
Service cost | $ 71 | $ 97 | $ 212 | $ 295
Interest cost | 280 | 170 | 838 | 512
Expected return on plan assets | 391 | 420 | 1,170 | 1,267
Amortization of prior service credit | (7) | (5) | (20) | (16)
Defined Benefit Plan, Amortization of (Gain) Loss | 24 | 163 | 71 | 495
Net periodic benefit cost | (23) | 5 | (69) | 19
Other Postretirement Benefits [Member] |  |  |  |
Defined Benefit Plan Disclosures [Line Items] |  |  |  |
Service cost | 1 | 1 | 3 | 4
Interest cost | 11 | 6 | 34 | 20
Defined Benefit Plan, Amortization of (Gain) Loss | (14) | (3) | (43) | (11)
Net periodic benefit cost | $ (2) | $ 4 | $ (6) | $ 13

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