Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 29, 2020
Segment Reporting Information [Line Items]
Revenues	$ 2,000,822	$ 1,826,216	$ 1,804,159
Income (loss) from operations	134,351	195,825	172,729
Interest (income) expense, net	(2,851)	(2,568)	(6,382)
Income before income taxes	134,325	196,871	177,888
Depreciation and amortization	108,777	105,955	104,697
Capital expenditures	144,319	133,639	116,717
Total assets	2,427,972	2,381,065	2,199,027
US and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,733,088	1,580,850	1,552,179
Income (loss) from operations	289,018	290,774	247,392
Interest (income) expense, net	(2,998)	(2,760)	(3,741)
Income before income taxes	291,960	293,357	251,088
Depreciation and amortization	75,876	73,611	71,020
Capital expenditures	135,725	129,327	110,024
Total assets	2,206,608	2,179,243	1,992,546
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	281,112	264,021	214,683
Income (loss) from operations	64,884	73,579	64,097
Income before income taxes	64,553	73,260	63,912
Depreciation and amortization	2,251	2,530	2,404
Capital expenditures	255	456	397
Total assets	35,748	37,605	33,233
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(281,112)	(264,021)	(214,683)
Income (loss) from operations	236	(283)	10,012
Income before income taxes	236	(283)	10,012
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	37,414	34,710	49,306
Income (loss) from operations	(243,428)	(192,353)	(171,514)
Interest (income) expense, net	147	192	(2,641)
Income before income taxes	(244,800)	(194,970)	(170,629)
Depreciation and amortization	24,075	23,190	24,983
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	1,770,502	1,615,560	1,601,485
Income (loss) from operations	110,710	171,717	149,987
Interest (income) expense, net	(2,851)	(2,568)	(6,382)
Income before income taxes	111,949	171,364	154,383
Depreciation and amortization	102,202	99,331	98,407
Capital expenditures	135,980	129,783	110,421
Total assets	2,242,356	2,216,848	2,025,779
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	152,885	145,454	133,185
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	152,885	145,454	133,185
Income (loss) from operations	23,658	24,801	17,845
Income before income taxes	22,396	26,198	18,604
Depreciation and amortization	4,097	4,510	4,335
Capital expenditures	7,122	3,407	4,864
Total assets	135,406	119,305	131,328
First Aid
Segment Reporting Information [Line Items]
Revenues	77,435	65,202	69,489
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	77,435	65,202	69,489
Income (loss) from operations	(17)	(693)	4,897
Income before income taxes	(20)	(691)	4,901
Depreciation and amortization	2,478	2,114	1,955
Capital expenditures	1,217	449	1,432
Total assets	$ 50,210	$ 44,912	$ 41,920