Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Segment Reporting Information [Line Items]
Revenues	$ 449,764	$ 464,600	$ 896,617	$ 929,998
Operating income (loss)	40,693	44,127	96,735	104,222
Interest income, net	(863)	(2,175)	(1,431)	(4,536)
Income (loss) before taxes	42,140	45,763	98,001	107,691
U.S. and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	388,627	403,161	774,785	810,964
Operating income (loss)	59,156	59,008	133,996	135,295
Interest income, net	(778)	(1,124)	(1,471)	(2,100)
Income (loss) before taxes	59,845	60,119	135,387	137,376
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	54,549	53,661	113,631	118,671
Operating income (loss)	14,774	16,714	34,584	39,260
Income (loss) before taxes	14,736	16,646	34,410	39,049
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(54,549)	(53,661)	(113,631)	(118,671)
Operating income (loss)	4,178	3,093	3,184	567
Income (loss) before taxes	4,178	3,093	3,184	567
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	9,608	9,031	16,640	17,526
Operating income (loss)	(42,742)	(40,458)	(87,528)	(82,957)
Interest income, net	(85)	(1,051)	40	(2,436)
Income (loss) before taxes	(43,317)	(39,811)	(88,700)	(81,309)
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	398,235	412,192	791,425	828,490
Operating income (loss)	35,366	38,357	84,236	92,165
Interest income, net	(863)	(2,175)	(1,431)	(4,536)
Income (loss) before taxes	35,442	40,047	84,281	95,683
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	35,222	35,980	73,356	69,382
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	35,222	35,980	73,356	69,382
Operating income (loss)	5,234	4,627	12,393	9,506
Income (loss) before taxes	6,603	4,573	13,611	9,457
First Aid
Segment Reporting Information [Line Items]
Revenues	16,307	16,428	31,836	32,126
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	16,307	16,428	31,836	32,126
Operating income (loss)	93	1,143	106	2,551
Income (loss) before taxes	$ 95	$ 1,143	$ 109	$ 2,551