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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2024
Retirement Benefits [Abstract] |
Net Periodic Benefit Costs | Net periodic benefit costs related to the Company’s unfunded supplemental benefit pension plans are summarized as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Expense: |  |  |  |  |  |  |  |  |  |  |  |
Service costs |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.1 |
Interest costs |  |  | 2.4 |  |  |  | 2.5 |  |  |  | 7.2 |  |  |  | 7.6 |
Amortization of net actuarial loss |  |  | 0.6 |  |  |  | 0.4 |  |  |  | 1.7 |  |  |  | 1.5 |
|  | $ | 3.0 |  |  | $ | 3.0 |  |  | $ | 9.0 |  |  | $ | 9.2 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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