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Commitments and Contingencies (Details) $ in Millions |  |  |  | 12 Months Ended | 72 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 25, 2020 USD ($) | Feb. 18, 2020 USD ($) | Feb. 07, 2013 plaintiff | Dec. 31, 2021 USD ($) employee warehouse agreement | Dec. 31, 1994 USD ($) | Dec. 31, 2021 USD ($) employee facility warehouse agreement | Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Letter of credit amount outstanding |  |  |  | $ 21.6 |  | $ 21.6 | $ 21.7
Number of employees | employee |  |  |  | 16,275 |  | 16,275 |
Number of collective bargaining agreements | agreement |  |  |  | 73 |  | 73 |
Number of collective bargaining agreements, agreements renewed | agreement |  |  |  | 17 |  |  |
Number of collective-bargaining agreements, agreements successfully negotiated | facility |  |  |  |  |  | 112 |
Number of collective bargaining agreements expiring in 2021 | agreement |  |  |  | 26 |  | 26 |
Number of warehouses where collective bargaining agreements are expiring in 2021 | warehouse |  |  |  | 22 |  | 22 |
Collective-Bargaining Arrangements |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of warehouses | warehouse |  |  |  | 250 |  | 250 |
Kansas Breach of Settlement Agreement |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation settlement, awarded to other party |  |  |  |  | $ 58.7 |  |
Number of plaintiffs appealing dismissal | plaintiff |  |  | 1 |  |  |  |
Preferred Freezer Services, LLC Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation settlement from other party |  | $ 0.6 |  |  |  |  |
Damages sought | $ 400.0 |  |  |  |  |  |
Surety Bond |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Outstanding surety bond |  |  |  | $ 12.8 |  | $ 12.8 | $ 10.1
Unionized Employees Concentration Risk |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of warehouses | warehouse |  |  |  | 84 |  | 84 |
Number of Employees | Unionized Employees Concentration Risk | Collective-Bargaining Arrangements |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Collective-bargaining arrangement, percentage of participants |  |  |  | 37.00% |  |  |
Number of Employees | Unionized Employees, Under Renegotiation Concentration Risk | Collective-Bargaining Arrangements |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Collective-bargaining arrangement, percentage of participants |  |  |  | 11.00% |  |  |

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