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Benefit Plans (Tables) | 3 Months Ended
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Mar. 30, 2025
Benefit Plans [Abstract] |
Net Periodic Benefit Cost | Components of Net Periodic Benefit Cost
|  | Pension Benefits |
|  | Three Months Ended |
(in millions of dollars) |  | Mar. 30, 2025 |  |  | Mar. 31, 2024 |
Service cost |  | $ | 1.0 |  |  | $ | 1.2 |
Interest cost |  |  | 4.2 |  |  |  | 4.0 |
Expected return on plan assets |  |  | (5.5 | ) |  |  | (5.0 | )
Amortization: |  |  |  |  |  |  |  |
Recognized net actuarial loss |  |  | 0.2 |  |  |  | 0.4 |
Net periodic benefit cost |  | $ | (0.1 | ) |  | $ | 0.6 |
| Post-Retirement Benefits |
| Three Months Ended |
(in millions of dollars) | Mar. 30, 2025 |  | Mar. 31, 2024 |
Service cost |  | $ | — |  |  | $ | — |
Interest cost |  |  | — |  |  |  | — |
Amortization: |  |  |  |  |  |  |  |
Recognized net actuarial (gain) |  |  | (0.1 | ) |  |  | (0.1 | )
Net periodic benefit cost |  | $ | (0.1 | ) |  | $ | (0.1 | )

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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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