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Employee Benefit Plans - Assumptions (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Benefits |  |  |
Assumptions used to determine benefit obligations: |  |  |
Discount rate | 5.10% | 5.30% | 2.90%
Assumptions used to determine net periodic benefit cost: |  |  |
Discount rate for service cost | 5.40% | 3.10% | 3.00%
Discount rate for interest cost | 5.20% | 2.40% | 2.10%
U.S. |  |  |
Assumptions used to determine benefit obligations: |  |  |
Discount rate | 5.00% | 5.20% | 2.80%
Assumptions used to determine net periodic benefit cost: |  |  |
Expected return on plan assets | 7.00% |  |
U.S. | Pension Benefits |  |  |
Assumptions used to determine benefit obligations: |  |  |
Discount rate | 5.00% | 5.20% | 2.80%
Rate of compensation increase | 4.50% | 4.50% | 4.50%
Assumptions used to determine net periodic benefit cost: |  |  |
Discount rate for service cost | 5.20% | 3.60% | 3.00%
Discount rate for interest cost | 5.00% | 2.80% | 1.90%
Expected return on plan assets | 7.00% | 6.60% | 6.50%
Rate of compensation increase | 4.50% | 4.50% | 4.50%
Int'l. | Pension Benefits |  |  |
Assumptions used to determine benefit obligations: |  |  |
Discount rate | 5.50% | 5.80% | 2.80%
Rate of compensation increase | 3.90% | 4.20% | 4.10%
Assumptions used to determine net periodic benefit cost: |  |  |
Discount rate for service cost | 5.80% | 2.80% | 2.40%
Discount rate for interest cost | 5.80% | 2.80% | 2.40%
Expected return on plan assets | 6.10% | 3.90% | 3.50%
Rate of compensation increase | 4.20% | 4.10% | 4.00%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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