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Leases (Tables) | 12 Months Ended
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Dec. 31, 2025
Leases [Abstract] |
Lease, Cost | Operating lease information is as follows:
| Year Ended December 31
| 2025 |  | 2024 |  | 2023
| (in millions of dollars)
Lease Cost |  |  |  |  |
Operating Lease Cost | $ | 17.8 |  |  | $ | 17.3 |  |  | $ | 16.4 |
Sublease Income | (2.3) |  |  | (1.7) |  |  | (1.5) |
Total Lease Cost | $ | 15.5 |  |  | $ | 15.6 |  |  | $ | 14.9 |
Other Information |  |  |  |  |
Cash Paid for Amounts Included in the Measurement of Lease Liabilities | $ | 19.9 |  |  | $ | 20.7 |  |  | $ | 20.3 |
Weighted-Average Remaining Lease Term | 5 years |  | 5 years |  | 5 years
Weighted-Average Discount Rate | 5.14 | % |  | 5.19 | % |  | 4.85 | %
Lessee, Operating Lease, Liability, Maturity | As of December 31, 2025, aggregate undiscounted minimum lease payments and the reconciliation to our lease liability are as follows (in millions of dollars):
2026 |  | $ | 22.4 |
2027 |  | 19.6 |
2028 |  | 17.6 |
2029 |  | 15.3 |
2030 |  | 6.3 |
2031 and Thereafter |  | 9.6 |
Total |  | 90.8 |
Less Imputed Interest |  | 11.9 |
Lease Liability |  | $ | 78.9 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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