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Debt (Tables) | 12 Months Ended
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Dec. 31, 2023
Debt Disclosure [Abstract] |
Summary of Indebtedness Outstanding | Indebtedness and scheduled maturities consisted of the following:
($ in millions) |  | Interest Rates |  | Final Maturity |  | December 31,
|  |  |  | 2023 |  | 2022
Short-term debt |  |  |  |  |  |  |  |
Revolving Credit Facility |  | Variable |  | 2026 |  | $ | — |  |  | $ | 249.0 |
Long-term debt(1) |  |  |  |  |  |  |  |
7.25% 2023 Senior Notes, Aggregate principal amount of $300.0 less unaccrued discount of $0.5 and $0.0 and unamortized debt issuance costs of $2.8 and $0.0 |  | 7.25% |  | 2028 |  | 296.7 |  |  | — |
4.50% 2015 Senior Notes, Aggregate principal amount of $250.0 less unaccrued discount of $0.2 and $0.2 and unamortized debt issuance costs of $0.5 and $0.8 |  | 4.50% |  | 2025 |  | 249.3 |  |  | 249.0 |
Total |  |  |  |  |  | $ | 546.0 |  |  | $ | 498.0 |
(1) The Company designates debt obligations as "long-term" based on maturity date at issuance.

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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