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PENSION AND POSTRETIREMENT PLANS (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Other Pension Plan Information |  |  |  |
Defined benefit plan, tax status extensible enumeration |  |  | us-gaap:NonqualifiedPlanMember |
U.S. Pension. | Pension |  |  |  |
Net periodic benefit costs |  |  |  |
Service cost | $ 11.6 | $ 10.6 | $ 23.2 | $ 20.8
Interest cost on benefit obligation | 21.8 | 22.0 | 43.6 | 44.0
Expected return on plan assets | (37.7) | (36.3) | (75.4) | (72.6)
Recognition of net actuarial loss (gain) | 1.5 |  | 3.0 |
Amortization of prior service benefit | (1.1) | (1.5) | (2.2) | (2.5)
Curtailments and settlements |  |  | 0.4 | 0.7
Total expense (benefit) | (3.9) | (5.2) | (7.4) | (9.6)
Other Pension Plan Information |  |  |  |
Contributions to plan |  |  | 4.0 |
Contributions anticipated to be made during the remainder of 2024 | 5.0 |  | 5.0 |
U.S. Pension. | U.S. Postretirement Benefits |  |  |  |
Net periodic benefit costs |  |  |  |
Service cost | 0.1 | 0.1 | 0.2 | 0.2
Interest cost on benefit obligation | 1.3 | 1.4 | 2.6 | 2.8
Recognition of net actuarial loss (gain) | (0.8) | (0.8) | (1.6) | (1.6)
Curtailments and settlements |  |  |  | (0.1)
Total expense (benefit) | 0.6 | 0.7 | 1.2 | 1.3
Other Pension Plan Information |  |  |  |
Contributions to plan |  |  | 6.0 |
Contributions anticipated to be made during the remainder of 2024 | 5.0 |  | 5.0 |
International Pension | Pension |  |  |  |
Net periodic benefit costs |  |  |  |
Service cost | 4.9 | 5.4 | 9.8 | 10.8
Interest cost on benefit obligation | 12.2 | 11.6 | 24.6 | 23.0
Expected return on plan assets | (12.5) | (14.0) | (25.0) | (27.8)
Recognition of net actuarial loss (gain) | 2.8 | 3.3 | 5.0 | 6.8
Amortization of prior service benefit | (0.1) | (0.1) | (0.2) | (0.2)
Total expense (benefit) | 7.3 | $ 6.2 | 14.2 | $ 12.6
Other Pension Plan Information |  |  |  |
Contributions to plan |  |  | 21.0 |
Contributions anticipated to be made during the remainder of 2024 | $ 24.0 |  | $ 24.0 |

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