Revenue Recognition - Schedule of Total Revenue Disaggregated by Service Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 449,764	$ 464,600	$ 896,617	$ 929,998
Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	100.00%	100.00%	100.00%	100.00%
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Total revenues	$ 398,235	$ 412,192	$ 791,425	$ 828,490
Core Laundry Operations | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	88.50%	88.70%	88.30%	89.10%
Specialty Garments
Disaggregation of Revenue [Line Items]
Total revenues	$ 35,222	$ 35,980	$ 73,356	$ 69,382
Specialty Garments | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	7.80%	7.70%	8.20%	7.50%
First Aid
Disaggregation of Revenue [Line Items]
Total revenues	$ 16,307	$ 16,428	$ 31,836	$ 32,126
First Aid | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	3.60%	3.50%	3.60%	3.50%