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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Schedule of Components of Net Periodic Benefit Cost |
| Millions of Dollars
| Pension Benefits |  | Other Benefits
| 2023 |  | 2022 |  | 2023 |  | 2022
| U.S. |  | Int'l. |  | U.S. |  | Int'l. |  |  |  |
Components of Net Periodic Benefit Cost |  |  |  |  |  |  |  |  |  |  |
Three Months Ended September 30 |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 12 |  |  | 10 |  |  | 13 |  |  | 13 |  |  | — |  |  | — |
Interest cost | 19 |  |  | 28 |  |  | 18 |  |  | 19 |  |  | 1 |  |  | 1 |
Expected return on plan assets | (15) |  |  | (38) |  |  | (10) |  |  | (31) |  |  | — |  |  | — |
Amortization of prior service credit | — |  |  | — |  |  | — |  |  | (1) |  |  | (9) |  |  | (9) |
Recognized net actuarial loss (gain) | 3 |  |  | 16 |  |  | 6 |  |  | 2 |  |  | (1) |  |  | — |
Settlements | 2 |  |  | — |  |  | 9 |  |  | — |  |  | — |  |  | — |
Net periodic benefit cost | $ | 21 |  |  | 16 |  |  | 36 |  |  | 2 |  |  | (9) |  |  | (8) |
Nine Months Ended September 30 |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 38 |  |  | 29 |  |  | 45 |  |  | 39 |  |  | — |  |  | 1 |
Interest cost | 58 |  |  | 85 |  |  | 42 |  |  | 61 |  |  | 4 |  |  | 3 |
Expected return on plan assets | (44) |  |  | (112) |  |  | (36) |  |  | (99) |  |  | — |  |  | — |
Amortization of prior service credit | — |  |  | — |  |  | — |  |  | (1) |  |  | (28) |  |  | (29) |
Recognized net actuarial loss (gain) | 9 |  |  | 50 |  |  | 17 |  |  | 6 |  |  | (3) |  |  | — |
Settlements | 6 |  |  | — |  |  | 31 |  |  | — |  |  | — |  |  | — |
Net periodic benefit cost | $ | 67 |  |  | 52 |  |  | 99 |  |  | 6 |  |  | (27) |  |  | (25) |

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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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