Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 26, 2023	Aug. 27, 2022	Aug. 28, 2021
Segment Reporting Information [Line Items]
Revenues	$ 2,233,047	$ 2,000,822	$ 1,826,216
Income (loss) from operations	133,603	134,351	195,825
Interest (income) expense, net	(6,738)	(2,851)	(2,568)
Income before income taxes	138,837	134,325	196,871
Depreciation and amortization	121,233	108,777	105,955
Capital expenditures	171,991	144,319	133,639
Total assets	2,569,975	2,427,972	2,381,065
US and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,907,765	1,733,088	1,580,850
Income (loss) from operations	293,171	289,018	290,774
Interest (income) expense, net	(3,105)	(2,998)	(2,760)
Income before income taxes	296,214	291,960	293,357
Depreciation and amortization	86,887	75,876	73,611
Capital expenditures	159,058	135,725	129,327
Total assets	2,347,895	2,206,608	2,179,243
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	297,752	281,112	264,021
Income (loss) from operations	88,292	64,884	73,579
Income before income taxes	87,935	64,553	73,260
Depreciation and amortization	2,135	2,251	2,530
Capital expenditures	78	255	456
Total assets	34,655	35,748	37,605
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(297,752)	(281,112)	(264,021)
Income (loss) from operations	(16,717)	236	(283)
Income before income taxes	(16,717)	236	(283)
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	53,424	37,414	34,710
Income (loss) from operations	(266,080)	(243,428)	(192,353)
Interest (income) expense, net	(3,633)	147	(192)
Income before income taxes	(264,459)	(244,800)	(194,970)
Depreciation and amortization	25,255	24,075	23,190
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	1,961,189	1,770,502	1,615,560
Income (loss) from operations	98,666	110,710	171,717
Interest (income) expense, net	(6,738)	(2,851)	2,568
Income before income taxes	102,973	111,949	171,364
Depreciation and amortization	114,277	102,202	99,331
Capital expenditures	159,136	135,980	129,783
Total assets	2,382,550	2,242,356	2,216,848
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	177,034	152,885	145,454
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	177,034	152,885	145,454
Income (loss) from operations	37,488	23,658	24,801
Income before income taxes	38,420	22,396	26,198
Depreciation and amortization	4,020	4,097	4,510
Capital expenditures	8,818	7,122	3,407
Total assets	127,057	135,406	119,305
First Aid
Segment Reporting Information [Line Items]
Revenues	94,824	77,435	65,202
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	94,824	77,435	65,202
Income (loss) from operations	(2,551)	(17)	(693)
Income before income taxes	(2,556)	(20)	(691)
Depreciation and amortization	2,936	2,478	2,114
Capital expenditures	4,037	1,217	449
Total assets	$ 60,368	$ 50,210	$ 44,912