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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2025
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] |
Schedule of Net Periodic Pension Benefit Cost and Net Periodic Post-employment Benefit Cost | The components of net periodic pension benefit cost and net periodic post-employment benefit cost were as follows (in millions):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Components of net periodic pension benefit (income) cost |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1.3 |  |  | $ | 1.6 |  |  | $ | 3.8 |  |  | $ | 4.7 |
Interest cost |  |  | 4.5 |  |  |  | 4.1 |  |  |  | 13.4 |  |  |  | 12.5 |
Expected return on plan assets |  |  | (5.4 | ) |  |  | (5.2 | ) |  |  | (16.2 | ) |  |  | (15.5 | )
Amortization of prior service cost |  |  | 0.4 |  |  |  | 0.5 |  |  |  | 1.2 |  |  |  | 1.3 |
Amortization of net actuarial gain |  |  | (1.5 | ) |  |  | (0.6 | ) |  |  | (4.3 | ) |  |  | (1.9 | )
Expenses paid |  |  | 0.2 |  |  |  | 0.2 |  |  |  | 0.5 |  |  |  | 0.5 |
Net periodic pension benefit (income) cost |  | $ | (0.5 | ) |  | $ | 0.6 |  |  | $ | (1.6 | ) |  | $ | 1.6 |
Components of net periodic post-employment benefit cost |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 0.4 |  |  | $ | 0.4 |  |  | $ | 1.1 |  |  | $ | 1.3 |
Interest cost |  |  | 0.5 |  |  |  | 0.6 |  |  |  | 1.8 |  |  |  | 1.8 |
Amortization of prior service credit |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | (1.1 | ) |  |  | (1.1 | )
Amortization of net actuarial gain |  |  | — |  |  |  | — |  |  |  | (0.1 | ) |  |  | — |
Net periodic post-employment benefit cost |  | $ | 0.5 |  |  | $ | 0.6 |  |  | $ | 1.7 |  |  | $ | 2.0 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (q) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: 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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