Retirement Plans - Components of Estimated Net Periodic Benefit Income (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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Defined Benefit Plan Disclosure [Line Items] | |||
Interest cost | $ 11.7 | $ 7.4 | $ 6.2 |
Expected return on assets | (13.2) | (11.6) | (14.2) |
Amortization, net | 1.0 | 3.3 | 3.8 |
Net pension plan income | $ (0.5) | $ (0.9) | $ (4.2) |
Weighted-average assumptions used to calculate net pension plan income: | |||
Discount rate | 5.20% | 2.90% | 2.60% |
Expected return on plan assets | 5.80% | 4.80% | 6.00% |
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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 Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. 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/exampleRef
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- References No definition available.
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