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POSTRETIREMENT BENEFIT PLANS (Tables) | 6 Months Ended
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Jun. 30, 2024
Retirement Benefits [Abstract] |
Schedule of Pretax Net Periodic Benefit Cost | The pretax FAS income related to our qualified defined benefit pension plans and retiree medical and life insurance plans consisted of the following (in millions):
|  | Quarters Ended | Six Months Ended
|  | June 30, 2024 |  | June 25 2023 | June 30, 2024 |  | June 25 2023
Qualified defined benefit pension plans |  |  |  |  |  |  |  |  |  |  |
Operating: |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | (15) |  |  |  | $ | (16) |  |  | $ | (30) |  |  |  | $ | (32) |  |
Non-operating: |  |  |  |  |  |  |  |  |  |  |
Interest cost |  | (350) |  |  |  | (365) |  |  | (699) |  |  |  | (730) |  |
Expected return on plan assets |  | 393 |  |  |  | 431 |  |  | 786 |  |  |  | 861 |  |
Amortization of actuarial losses |  | (65) |  |  |  | (42) |  |  | (130) |  |  |  | (84) |  |
Amortization of prior service credits |  | 37 |  |  |  | 87 |  |  | 74 |  |  |  | 174 |  |
Non-service FAS pension income |  | 15 |  |  |  | 111 |  |  | 31 |  |  |  | 221 |  |
Total FAS pension income |  | $ | — |  |  |  | $ | 95 |  |  | $ | 1 |  |  |  | $ | 189 |  |
Retiree medical and life insurance plans |  |  |  |  |  |  |  |  |  |  |
Operating: |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | (1) |  |  |  | $ | (2) |  |  | $ | (2) |  |  |  | $ | (3) |  |
Non-operating: |  |  |  |  |  |  |  |  |  |  |
Interest cost |  | (16) |  |  |  | (17) |  |  | (32) |  |  |  | (34) |  |
Expected return on plan assets |  | 27 |  |  |  | 26 |  |  | 54 |  |  |  | 52 |  |
Amortization of actuarial gains |  | 9 |  |  |  | 8 |  |  | 18 |  |  |  | 16 |  |
Amortization of prior service costs |  | (1) |  |  |  | (2) |  |  | (2) |  |  |  | (5) |  |
Non-service FAS retiree medical and life income |  | 19 |  |  |  | 15 |  |  | 38 |  |  |  | 29 |  |
Total FAS retiree medical and life income |  | $ | 18 |  |  |  | $ | 13 |  |  | $ | 36 |  |  |  | $ | 26 |  |

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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://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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