Commitments and Contingencies - Changes to Environmental Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Feb. 25, 2023	Feb. 26, 2022
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 32,191
Revisions in estimates	(5)
Costs incurred for which reserves have been provided	(794)
Insurance proceeds	59
Interest accretion	518	$ 298
Changes in discount rates	(1,655)
Ending balance	$ 30,314
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities, Noncurrent