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Debt (Tables) | 3 Months Ended
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Mar. 31, 2019
Debt Disclosure [Abstract] |
Carrying Amounts and Estimated Fair Value of Long-Term Debt | Carrying amounts and the related estimated fair values of the Company’s long-term debt financial instruments not measured at fair value on a recurring basis at March 31, 2019 and December 30, 2018 are presented in the following table:
|  | As of March 31, 2019 |  | As of December 30, 2018
$ in millions |  | Principal |  | Carrying Amount |  | Fair Value |  | Principal |  | Carrying Amount |  | Fair Value
Total long-term debt including current portion |  | $ | 300.0 |  |  | $ | 294.4 |  |  | $ | 316.1 |  |  | $ | 300.0 |  |  | $ | 294.2 |  |  | $ | 305.3 |

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