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EMPLOYEE BENEFIT PLANS (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Schedule of Net Benefit Costs | Net periodic benefit costs for qualified defined-benefit plans include the following (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Service cost | $ | 8 |  |  | $ | 12 |  |  | $ | 22 |  |  | $ | 34 |
Pension expense included in Wages and benefits | 8 |  |  | 12 |  |  | 22 |  |  | 34 |
Interest cost | 27 |  |  | 17 |  |  | 81 |  |  | 49 |
Expected return on assets | (28) |  |  | (32) |  |  | (85) |  |  | (96) |
Amortization of prior service cost (credit) | — |  |  | (1) |  |  | — |  |  | (1) |
Recognized actuarial loss | 5 |  |  | 2 |  |  | 17 |  |  | 6 |
Pension expense included in Non-operating Income (Expense) | $ | 4 |  |  | $ | (14) |  |  | $ | 13 |  |  | $ | (42) |

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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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