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v3.25.1

Debt and Credit Arrangements (Tables) | 3 Months Ended
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Mar. 31, 2025
Debt Disclosure [Abstract] |
Summary of Carrying Amounts and Fair Values of Long-term Debt | A summary of the carrying amounts of our long-term debt is listed below.
| Effective Interest Rate |  | March 31, 2025 |  | December 31, 2024
4.650% Senior Notes due 2028 (less unamortized discount and issuance costs of $0.6 and $1.6, respectively) | 4.780% |  | $ | 497.8 |  |  | $ | 497.6 |
4.750% Senior Notes due 2030 (less unamortized discount and issuance costs of $2.1 and $3.1, respectively) | 4.920% |  | 644.8 |  |  | 644.6 |
2.400% Senior Notes due 2031 (less unamortized discount and issuance costs of $0.5 and $2.8, respectively) | 2.512% |  | 496.7 |  |  | 496.6 |
5.375% Senior Notes due 2033 (less unamortized discount and issuance costs of $3.2 and $2.6, respectively) | 5.650% |  | 294.2 |  |  | 294.0 |
3.375% Senior Notes due 2041 (less unamortized discount and issuance costs of $0.9 and $4.6, respectively) | 3.448% |  | 494.5 |  |  | 494.4 |
5.400% Senior Notes due 2048 (less unamortized discount and issuance costs of $2.5 and $4.4, respectively) | 5.480% |  | 493.1 |  |  | 493.1 |
Other notes payable and finance leases |  |  | 0.3 |  |  | 0.3 |
Total long-term debt |  |  | 2,921.4 |  |  | 2,920.6 |
Less: current portion |  |  | 0.1 |  |  | 0.1 |
Long-term debt, excluding current portion |  |  | $ | 2,921.3 |  |  | $ | 2,920.5 |

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