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Accrued Insurance Claims - Narratives (Details) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jan. 25, 2020 USD ($) state | Jan. 29, 2021 USD ($) | Jan. 26, 2019 USD ($) | Jan. 27, 2018 USD ($) | Jul. 29, 2017 USD ($)
Accrued Insurance Claims [Line Items] |  |  |  |  |
Insurance coverage threshold | $ 5,000,000.0 |  |  |  |
Number of states with state-sponsored insurance fund | state | 2 |  |  |  |
Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment | $ 77,100,000 |  | $ 78,900,000 | $ 67,100,000 | $ 103,700,000
Insurance liability, annual retained risk loss |  |  | 400,000 |  |
Insurance Liability, Annual Retained Risk of Loss, Under Employee Health Plan Per Participant, Maximum Threshold | 475,000 |  | $ 425,000 |  |
Decrease in insurance recoveries/ receivable | 8,800,000 |  |  |  |
Maximum |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Insurance liability, annual retained risk loss | 450,000 |  |  |  |
Losses below 5 million | Maximum |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Retained risk of loss, general liability and workers' compensation, maximum automobile liability | 1,000,000.0 |  |  |  |
Losses in excess of 5 million | Maximum |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Retained risk of loss, general liability and workers' compensation, maximum automobile liability | 5,000,000.0 |  |  |  |
Losses in excess of 10 million |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment | $ 10,000,000 |  |  |  |
Scenario, Forecast | Losses below 5 million |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment |  | $ 85,800,000 |  |  |
Scenario, Forecast | Losses below 5 million | Maximum |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Retained risk of loss, general liability and workers' compensation, maximum automobile liability |  | 1,000,000.0 |  |  |
Scenario, Forecast | Losses in excess of 5 million |  |  |  |  |
Accrued Insurance Claims [Line Items] |  |  |  |  |
Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment |  | $ 11,500,000 |  |  |

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- Definition Accrued Insurance Claims [Line Items] + References No definition available. + Details
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- Definition Aggregate Stop Loss Coverage for Automobile Liability, General Liability, and Workers' Compensation Claims Before Adjustment Increase + References No definition available. + Details
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- Definition The maximum retained risk of loss per occurrence for automobile liability. + References No definition available. + Details
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- Definition Insurance Liability, Annual Retained Risk of Loss, Under Employee Health Plan Per Participant, Maximum Threshold + References No definition available. + Details
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- Definition The increase (decrease) in insurance liability balances during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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