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RETIREMENT BENEFITS PLANS - Pension Plans Assumptions (Details) - Pension plans | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
United States |  |  |  |
Assumptions used to determine benefit obligation at year-end (as a percent) |  |  |  |
Discount rate |  | 5.47% | 2.81% | 2.48%
Rate of compensation increase |  | 3.33% | 3.12% | 3.12%
Interest rate used to credit cash balance plans |  | 3.67% | 1.99% | 2.02%
Assumptions used to determine expense (as a percent) |  |  |  |
Discount rate used to determine benefit obligation |  | 4.30% | 2.61% | 3.22%
Discount rate used to determine service cost |  | 4.41% | 2.92% | 3.34%
Discount rate used to determine interest cost |  | 3.94% | 1.83% | 2.75%
Expected long-term return on plan assets |  | 6.50% | 6.75% | 7.25%
Rate of compensation increase |  | 3.12% | 3.12% | 3.14%
Interest rate used to credit cash balance plans |  | 2.62% | 2.14% | 2.59%
Foreign Plan |  |  |  |
Assumptions used to determine benefit obligation at year-end (as a percent) |  |  |  |
Discount rate |  | 4.83% | 2.01% | 1.59%
Rate of compensation increase |  | 3.12% | 3.01% | 3.02%
Interest rate used to credit cash balance plans |  | 2.32% | 0.56% | 0.53%
Assumptions used to determine expense (as a percent) |  |  |  |
Discount rate used to determine benefit obligation |  | 2.01% | 1.63% | 2.02%
Discount rate used to determine service cost |  | 2.98% | 2.52% | 2.78%
Discount rate used to determine interest cost |  | 1.84% | 1.36% | 1.82%
Expected long-term return on plan assets |  | 5.70% | 5.62% | 5.84%
Rate of compensation increase |  | 3.01% | 3.02% | 3.05%
Interest rate used to credit cash balance plans |  | 0.56% | 0.52% | 0.54%
Forecast | United States |  |  |  |
Assumptions used to determine expense (as a percent) |  |  |  |
Expected long-term return on plan assets | 6.50% |  |  |
Forecast | Foreign Plan |  |  |  |
Assumptions used to determine expense (as a percent) |  |  |  |
Expected long-term return on plan assets | 6.32% |  |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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