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Debt and Credit Arrangements (Tables) | 9 Months Ended
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Sep. 30, 2023
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 |  | September 30, 2023 |  | December 31, 2022
4.200% Senior Notes due 2024 (less unamortized discount and issuance costs of $0.0 and $0.1, respectively) | 4.240% |  | $ | 249.9 |  |  | $ | 249.7 |
4.650% Senior Notes due 2028 (less unamortized discount and issuance costs of $1.0 and $2.2, respectively) | 4.780% |  | 496.8 |  |  | 496.4 |
4.750% Senior Notes due 2030 (less unamortized discount and issuance costs of $2.7 and $4.0, respectively) | 4.920% |  | 643.3 |  |  | 642.6 |
2.400% Senior Notes due 2031 (less unamortized discount and issuance costs of $0.6 and $3.5, respectively) | 2.512% |  | 495.9 |  |  | 495.5 |
5.375% Senior Notes due 2033 (less unamortized discount and issuance costs of $3.7 and $3.2, respectively) | 5.650% |  | 293.1 |  |  | — |
3.375% Senior Notes due 2041 (less unamortized discount and issuance costs of $1.0 and $5.0, respectively) | 3.448% |  | 494.0 |  |  | 493.7 |
5.400% Senior Notes due 2048 (less unamortized discount and issuance costs of $2.5 and $4.7, respectively) | 5.480% |  | 492.8 |  |  | 492.6 |
Other notes payable and finance leases |  |  | 0.4 |  |  | 0.8 |
Total long-term debt |  |  | 3,166.2 |  |  | 2,871.3 |
Less: current portion |  |  | 250.0 |  |  | 0.6 |
Long-term debt, excluding current portion |  |  | $ | 2,916.2 |  |  | $ | 2,870.7 |

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