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Lines of Credit and Financing Arrangements (Tables) | 12 Months Ended
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Dec. 31, 2025
Debt Disclosure [Abstract] |
Outstanding debt obligations | The following tables summarize our outstanding debt obligations and their classification in the accompanying Consolidated Balance Sheets (in millions):
| As of December 31,
| 2025 |  | 2024
Commercial paper: | $ | 226.0 |  |  | $ | — |
Current maturities of long-term debt: |  |  |
Finance lease obligations | $ | 18.3 |  |  | $ | 14.9 |
Senior unsecured notes | — |  |  | 300.0 |
Debt issuance costs | — |  |  | (0.4) |
Total current maturities of long-term debt | $ | 18.3 |  |  | $ | 314.5 |
Long-Term Debt: |  |  |
Finance lease obligations | 50.6 |  |  | 39.5 |
Term loan | 300.0 |  |  | — |
Senior unsecured notes | 800.0 |  |  | 800.0 |
Debt issuance costs | (6.5) |  |  | (6.4) |
Total long-term debt | $ | 1,144.1 |  |  | $ | 833.1 |
Total debt | $ | 1,388.4 |  |  | $ | 1,147.6 |
Aggregate amounts of required principal payments on total debt | As of December 31, 2025, the aggregate amounts of required principal payments on total debt excluding finance lease obligations (see Note 5) were as follows (in millions):
2026 | $ | — |
2027 | 600.0 |
2028 | 500.0 |
Thereafter | — |
Summary of weighted average borrowing rate facility | Below is a summary of the weighted average interest rate for CP notes as of December 31, 2025 and 2024:
| As of December 31,
| 2025 |  | 2024
Weighted average borrowing rate | 3.98 | % |  | — | %
The Term Credit Agreement contains customary covenants and events of default that are substantially similar to the existing covenants and events of default in our Credit Agreement.
| As of December 31,
| 2025 |  | 2024
Weighted average borrowing rate | 4.90 | % |  | — | %
Below is a summary of the weighted average interest rate as of December 31, 2025 and 2024:
| As of December 31,
| 2025 |  | 2024
Weighted average borrowing rate | — | % |  | — | %

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