BENEFIT PLANS: (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Post retirement defined benefit plans | ||
| Defined benefit plan, net periodic benefit costs | ||
| Service cost | $ 1.6 | $ 1.2 |
| Interest cost | 2.0 | 1.9 |
| Expected return on plan assets | (4.7) | (3.6) |
| Amortization of prior service cost/ (credit) | 0.1 | 0.1 |
| Amortization of net loss/(gain) | (0.6) | 0.1 |
| Net periodic (benefit) cost | (1.6) | (0.3) |
| Post-retirement health care plans | ||
| Defined benefit plan, net periodic benefit costs | ||
| Interest cost | 1.2 | 1.0 |
| Net periodic (benefit) cost | $ 1.2 | $ 1.0 |
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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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- 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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- Details
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