Summary of Significant Accounting Policies - Schedule of Total Revenue Disaggregated by Service Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 26, 2023	Aug. 27, 2022	Aug. 28, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,233,047	$ 2,000,822	$ 1,826,216
Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	100.00%	100.00%	100.00%
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,961,189	$ 1,770,502	$ 1,615,560
Core Laundry Operations | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	87.80%	88.50%	88.50%
Specialty Garments
Disaggregation of Revenue [Line Items]
Total revenues	$ 177,034	$ 152,885	$ 145,454
Specialty Garments | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	8.00%	7.60%	8.00%
First Aid
Disaggregation of Revenue [Line Items]
Total revenues	$ 94,824	$ 77,435	$ 65,202
First Aid | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	4.20%	3.90%	3.50%