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Commitments and Contingencies (Details) - USD ($) $ in Millions | Dec. 26, 2020 | Dec. 28, 2019
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Commitments and Contingencies Disclosure [Abstract] |  |
Purchase Obligation, Extending Greater Than Twelve Months | $ 0.0 |
Letters of Credit Outstanding, Amount | $ 48.7 | $ 32.0

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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- Definition Amount of purchase arrangement to be paid in second fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant