PENSION AND POST-RETIREMENT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COST (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income, net of tax: | ||||
| Total recognized in other comprehensive (income) loss | $ 1.2 | $ 0.7 | $ 2.2 | $ 2.4 |
| Pension Benefits | ||||
| Components of Net Periodic Benefit Cost (credit): | ||||
| Service cost | 1.3 | 1.3 | 3.8 | 3.5 |
| Interest cost | 2.6 | 2.6 | 7.7 | 7.8 |
| Expected return on plan assets | (5.9) | (4.4) | (14.1) | (13.2) |
| Net periodic benefit credit | (2.0) | (0.5) | (2.6) | (1.9) |
| Post-retirement benefits | ||||
| Components of Net Periodic Benefit Cost (credit): | ||||
| Service cost | 0.1 | 0.1 | ||
| Interest cost | 0.3 | 0.5 | 0.8 | |
| Amortization of net actuarial loss (gain) | (1.0) | (0.2) | (1.3) | (0.5) |
| Amortization of prior service credit | (0.5) | (2.7) | (1.6) | (4.6) |
| Net periodic benefit credit | $ (1.5) | $ (2.6) | $ (2.3) | $ (4.2) |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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