Commitments and Contingencies - Changes to Environmental Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 30, 2025	Aug. 31, 2024	Aug. 26, 2023
Accrual For Environmental Loss Contingencies Roll Forward
Beginning balance	$ 31,255	$ 30,029
Costs incurred for which reserves have been provided	(2,532)	(3,176)
Insurance proceeds	246	238
Interest accretion	1,280	1,264	$ 1,036
Changes in discount rates	(1,332)	244
Revisions in estimates	1,735	2,656
Ending balance	$ 30,652	$ 31,255	$ 30,029
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities, Noncurrent	Accounts Payable and Accrued Liabilities, Noncurrent