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Debt (Tables) | 3 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Long-term Debt Obligations, Net of Current Maturities | The following table summarizes our long-term debt obligations, net of unamortized debt issuance costs and current maturities. The interest rates shown in parentheses are as of March 31, 2018.
($ in millions) | March 31, 2018 |  | December 31, 2017
Note payable, due December 31, 2019 | $ | 0.1 |  |  | $ | 0.1 |
Credit Facility, due October 15, 2020 (1.00%) | 30.6 |  |  | 29.6 |
Series A notes, due July 5, 2022 (3.67%) | 42.0 |  |  | 42.0 |
Series B notes, due July 5, 2024 (3.82%) | 53.0 |  |  | 53.0 |
Series C notes, due July 5, 2027 (4.02%) | 73.0 |  |  | 73.0 |
| 198.7 |  |  | 197.7 |
Less: unamortized debt issuance costs | 0.7 |  |  | 0.7 |
Total debt | 198.0 |  |  | 197.0 |
Less: current portion of long-term debt | — |  |  | — |
Long-term debt, net | $ | 198.0 |  |  | $ | 197.0 |

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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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