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Pensions and Postretirement Benefits Other than Pensions (Tables) | 9 Months Ended
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Sep. 30, 2025
Pension Plan, Defined Benefit [Member] |
Schedule of Net Periodic Benefit Cost | The components of the Company's net periodic pension benefit cost for the three and nine months ended September 30 were as follows:
| Three months ended |  | Nine months ended
In millions | 2025 |  | 2024 |  | 2025 |  | 2024
Service cost | $ | 7.4 |  |  | $ | 8.2 |  |  | $ | 22.2 |  |  | $ | 24.2 |
Interest cost | 28.1 |  |  | 28.2 |  |  | 83.7 |  |  | 84.7 |
Expected return on plan assets | (27.1) |  |  | (29.6) |  |  | (80.7) |  |  | (88.4) |
Net amortization of: |  |  |  |  |  |  |
Prior service costs (benefits) | 0.7 |  |  | 0.7 |  |  | 2.1 |  |  | 2.2 |
Net actuarial (gains) losses | 4.1 |  |  | 3.8 |  |  | 12.0 |  |  | 11.3 |
Net periodic pension benefit cost | 13.2 |  |  | 11.3 |  |  | 39.3 |  |  | 34.0 |
Settlement losses | — |  |  | 1.0 |  |  | 0.7 |  |  | 1.0 |
Net periodic pension benefit cost after net settlement losses | $ | 13.2 |  |  | $ | 12.3 |  |  | $ | 40.0 |  |  | $ | 35.0 |
Amounts recorded in continuing operations: |  |  |  |  |  |  |
Operating income | $ | 6.4 |  |  | $ | 7.0 |  |  | $ | 18.9 |  |  | $ | 21.0 |
Other income/(expense), net | 4.3 |  |  | 3.6 |  |  | 13.7 |  |  | 9.0 |
Amounts recorded in discontinued operations | 2.5 |  |  | 1.7 |  |  | 7.4 |  |  | 5.0 |
Total | $ | 13.2 |  |  | $ | 12.3 |  |  | $ | 40.0 |  |  | $ | 35.0 |
Other Postretirement Benefit Plan, Defined Benefit [Member] |
Schedule of Net Periodic Benefit Cost | The components of net periodic postretirement benefit cost for the three and nine months ended September 30 were as follows:
| Three months ended |  | Nine months ended
In millions | 2025 |  | 2024 |  | 2025 |  | 2024
Service cost | $ | 0.3 |  |  | $ | 0.4 |  |  | $ | 0.8 |  |  | $ | 0.9 |
Interest cost | 2.7 |  |  | 2.8 |  |  | 8.2 |  |  | 8.6 |
Net amortization of: |  |  |  |  |  |  |
Prior service costs (benefits) | 0.1 |  |  | 0.1 |  |  | 0.4 |  |  | 0.4 |
Net actuarial (gains) losses | (3.2) |  |  | (3.3) |  |  | (9.6) |  |  | (9.9) |
Net periodic postretirement benefit cost | $ | (0.1) |  |  | $ | — |  |  | $ | (0.2) |  |  | $ | — |
Amounts recorded in continuing operations: |  |  |  |  |  |  |
Operating income | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | 0.8 |  |  | $ | 0.9 |
Other income/(expense), net | (0.1) |  |  | 0.1 |  |  | (0.4) |  |  | 0.1 |
Amounts recorded in discontinued operations | (0.3) |  |  | (0.4) |  |  | (0.6) |  |  | (1.0) |
Total | $ | (0.1) |  |  | $ | — |  |  | $ | (0.2) |  |  | $ | — |

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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://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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