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Leases | 12 Months Ended
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Dec. 31, 2025
Leases [Abstract] |
Lessee, Operating Leases | We lease certain buildings and equipment under various noncancellable operating lease agreements. In addition, we have sub-lease agreements on a limited number of our building lease agreements. We have the option to renew the majority of our building leases and equipment leases at the end of the lease term at the fair rental value at the time of renewal. We do not have any lease agreements or sub-lease agreements that contain variable lease payments. In addition, we do not have lease agreements or sub-lease agreements that contain residual value guarantees or impose any financial restrictions or covenants with the lessors. 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 | %
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 |
The right-of-use asset was $55.7 million and $45.1 million at December 31, 2025 and 2024, respectively.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/842-20/tableOfContent + Details
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