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RETIREMENT PLANS - Assumption Details (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
U.S. Pension. | Corporate bonds | Minimum |  |  |
Weighted-average actuarial assumptions used to determine net cost: |  |  |
Maturity period of debt securities | 6 months |  |
U.S. Pension. | Corporate bonds | Maximum |  |  |
Weighted-average actuarial assumptions used to determine net cost: |  |  |
Maturity period of debt securities | 30 years |  |
U.S. Pension. | Pension |  |  |
Weighted-average actuarial assumptions used to determine benefit obligations as of year end: |  |  |
Discount rate (as a percent) | 5.17% | 2.86% | 2.48%
Projected salary increase (as a percent) | 4.03% | 4.03% | 4.03%
Weighted-average actuarial assumptions used to determine net cost: |  |  |
Interest credit rate for cash balance plans | 1.56% | 0.87% | 1.81%
Discount rate (as a percent) | 2.86% | 2.49% | 3.20%
Expected return on plan assets (as a percent) | 7.00% | 7.00% | 7.25%
Projected salary increase (as a percent) | 4.03% | 4.03% | 4.03%
U.S. Pension. | U.S. Postretirement Benefits |  |  |
Weighted-average actuarial assumptions used to determine benefit obligations as of year end: |  |  |
Discount rate (as a percent) | 5.14% | 2.75% | 2.37%
Weighted-average actuarial assumptions used to determine net cost: |  |  |
Discount rate (as a percent) | 2.75% | 2.37% | 3.16%
Expected return on plan assets (as a percent) | 7.00% | 7.00% | 7.25%
Defined Benefit Plan Assumed Health Care Cost Trend Rates |  |  |
Annual rates of increase in the per capita cost of covered health care for pre-age 65 retirees (as a percent) | 6.75% |  |
Rate of per capita cost of covered health care, in 2028 (as a percent) | 4.50% |  |
International Pension | Pension |  |  |
Weighted-average actuarial assumptions used to determine benefit obligations as of year end: |  |  |
Discount rate (as a percent) | 3.70% | 1.45% | 1.13%
Projected salary increase (as a percent) | 2.81% | 2.42% | 2.12%
Weighted-average actuarial assumptions used to determine net cost: |  |  |
Discount rate (as a percent) | 1.46% | 1.37% | 1.84%
Expected return on plan assets (as a percent) | 6.18% | 6.24% | 6.24%
Projected salary increase (as a percent) | 2.47% | 2.31% | 2.81%
Defined Benefit Plan Assumed Health Care Cost Trend Rates |  |  |
Plan amendments, decrease in benefit obligation |  | $ 0.7 |

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