Benefit Plans (Net Periodic Benefit Cost (Income)) (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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| Contributions by employer | $ 7.5 | $ 7.5 | ||
| Pension [Member] | ||||
| Service cost | $ 0.5 | $ 0.5 | 1.5 | 1.6 |
| Interest cost | 3.2 | 3.7 | 9.5 | 11.0 |
| Expected return on assets | (3.8) | (3.9) | (11.3) | (11.8) |
| Prior service cost | 0.2 | 0.2 | 0.7 | 0.7 |
| Actuarial loss / (gain) | 0.7 | 0.8 | 2.0 | 2.4 |
| Net periodic benefit cost | $ 0.8 | $ 1.3 | $ 2.4 | $ 3.9 |
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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 contribution received by defined benefit plan from employer which increases plan assets. 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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- 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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