Accrued Insurance Claims - Narratives (Details)	6 Months Ended
	Jul. 31, 2021 USD ($) state	Jan. 25, 2020 USD ($)
Accrued Insurance Claims [Line Items]
Insurance Liability, Annual Retained Risk of Loss, Under Employee Health Plan Per Participant, Maximum Threshold	$ 475,000
Number of states with state-sponsored insurance fund | state	2
Decrease in accrued insurance claims	$ 4,200,000
Insurance Coverage Treshold Per Policy	5,000,000
Threshold One
Accrued Insurance Claims [Line Items]
Retained risk of loss, general liability and workers' compensation, maximum automobile liability	1,000,000
Threshold Two
Accrued Insurance Claims [Line Items]
Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment	11,500,000
Maximum
Accrued Insurance Claims [Line Items]
Insurance liability, annual retained risk loss	600,000	$ 450,000
Maximum | Threshold Three
Accrued Insurance Claims [Line Items]
Insurance Coverage Threshold Per Policy	30,000,000
Minimum | Threshold Three
Accrued Insurance Claims [Line Items]
Insurance Coverage Threshold Per Policy	$ 10,000,000