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Employee Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2024
Retirement Benefits [Abstract] |
Net periodic benefit costs | The components of net periodic benefit costs, reported in other expenses, were as follows:
|  | Three Months Ended March 31,
|  | 2024 |  | 2023
|  | Pension Benefits |  | Other Postretirement Benefits |  | Pension Benefits |  | Other Postretirement Benefits
|  | (In millions)
Service costs |  | $ | 40 |  |  | $ | 1 |  |  | $ | 38 |  |  | $ | 1 |
Interest costs |  | 114 |  |  | 10 |  |  | 118 |  |  | 11 |
Expected return on plan assets |  | (115) |  |  | (14) |  |  | (120) |  |  | (13) |
Amortization of net actuarial (gains) losses |  | 42 |  |  | (8) |  |  | 39 |  |  | (8) |
Amortization of prior service costs (credit) |  | (3) |  |  | — |  |  | (3) |  |  | — |
Net periodic benefit costs (credit) |  | $ | 78 |  |  | $ | (11) |  |  | $ | 72 |  |  | $ | (9) |

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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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