Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2024	Aug. 26, 2023	Aug. 27, 2022
Segment Reporting Information [Line Items]
Revenues	$ 2,427,431	$ 2,233,047	$ 2,000,822
Operating income (loss)	183,578	133,603	134,351
Interest income, net	(7,242)	(6,738)	(2,851)
Other expense, net	1,441	1,504	2,877
Total consolidated other (income) expense, net	(5,801)	(5,234)	26
Total consolidated income before income taxes	189,379	138,837	134,325
Depreciation and amortization	141,432	121,233	108,777
Capital expenditures	160,417	171,991	144,319
Total assets	2,696,413	2,569,975	2,427,972
U.S. and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	2,083,059	1,907,765	1,733,088
Operating income (loss)	331,031	293,171	289,018
Depreciation and amortization	105,525	86,887	75,876
Capital expenditures	144,807	159,058	135,725
Total assets	2,468,973	2,347,895	2,206,608
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	315,159	297,752	281,112
Operating income (loss)	95,072	88,292	64,884
Depreciation and amortization	1,996	2,135	2,251
Capital expenditures	547	78	255
Total assets	32,075	34,655	35,748
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(315,159)	(297,752)	(281,112)
Operating income (loss)	(9,707)	(16,717)	236
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	55,889	53,424	37,414
Operating income (loss)	(272,962)	(266,080)	(243,428)
Depreciation and amortization	26,070	25,255	24,075
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	2,138,948	1,961,189	1,770,502
Operating income (loss)	143,434	98,666	110,710
Depreciation and amortization	133,591	114,277	102,202
Capital expenditures	145,354	159,136	135,980
Total assets	2,501,048	2,382,550	2,242,356
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	182,212	177,034	152,885
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	182,212	177,034	152,885
Operating income (loss)	41,976	37,488	23,658
Depreciation and amortization	4,398	4,020	4,097
Capital expenditures	11,894	8,818	7,122
Total assets	148,001	127,057	135,406
First Aid
Segment Reporting Information [Line Items]
Revenues	106,271	94,824	77,435
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	106,271	94,824	77,435
Operating income (loss)	(1,832)	(2,551)	(17)
Depreciation and amortization	3,443	2,936	2,478
Capital expenditures	3,169	4,037	1,217
Total assets	$ 47,364	$ 60,368	$ 50,210