Retirement Plans - Components of Estimated Net Periodic Benefit Expense (Income) (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Retirement Benefits [Abstract] | ||||
| Interest cost | $ 2.5 | $ 2.7 | $ 5.1 | $ 5.5 |
| Expected return on assets | (2.5) | (3.3) | (5.0) | (6.7) |
| Amortization, net | 0.4 | 0.3 | 0.8 | 0.6 |
| Net pension plan expense (income) | $ 0.4 | $ (0.3) | $ 0.9 | $ (0.6) |
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- References No definition available.
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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 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/exampleRef
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