| Debt - Covenants (Narrative) (Details) | 3 Months Ended | 
|---|---|
| Apr. 01, 2021 | |
| ABL Facility | |
| Debt Instrument [Line Items] | |
| Percentage usage of facility to trigger covenant | 90.00% | 
| X | ||||||||||
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- Definition Borrowing Requirement Of Credit Facility Percent Of Availability No definition available. 
 | 
| X | ||||||||||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
 | 
| X | ||||||||||
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- Details 
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