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POSTRETIREMENT BENEFIT PLANS - Income Statement Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Oct. 01, 2021 | Sep. 30, 2022 | Oct. 01, 2021
Pension |  |  |  |
Operating |  |  |  |
Service cost | $ 10 | $ 16 | $ 32 | $ 52
Non-operating |  |  |  |
Interest cost | 55 | 47 | 165 | 139
Expected return on plan assets | (156) | (155) | (468) | (467)
Amortization of net actuarial loss (gain) | 2 | 7 | 7 | 26
Amortization of prior service (credit) cost | (7) | (7) | (21) | (21)
Effect of curtailments or settlements |  | 7 |  | 4
Non-service cost periodic benefit income | (106) | (101) | (317) | (319)
Net periodic benefit income | (96) | (85) | (285) | (267)
Other Benefits |  |  |  |
Operating |  |  |  |
Service cost | 1 | 1 | 2 | 2
Non-operating |  |  |  |
Interest cost | 1 | 1 | 5 | 4
Expected return on plan assets | (5) | (5) | (16) | (15)
Amortization of net actuarial loss (gain) | (1) | 0 | (5) | 0
Amortization of prior service (credit) cost | 0 | 1 | 1 | 1
Effect of curtailments or settlements |  | 0 |  | 0
Non-service cost periodic benefit income | (5) | (3) | (15) | (10)
Net periodic benefit income | $ (4) | $ (2) | $ (13) | $ (8)

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