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Fair Value Measurements Interest Rate Derivatives (Details) - USD ($)			3 Months Ended		12 Months Ended
	Jun. 12, 2017	Sep. 13, 2016	Aug. 29, 2020	Aug. 31, 2019	Aug. 28, 2021	May 30, 2020
Derivative [Line Items]
Unrealized gains (losses) on interest rate swap agreement			$ 300,000	$ 8,800,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax			(1,100,000)	200,000
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net			0	$ 0
Scenario, Forecast
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Gross Amount to be Transferred					$ (4,400,000)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred					$ (3,300,000)
Interest rate swap agreement
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 75,000,000.0	$ 150,000,000.0
Debt conversion rate	2.387%	1.949%
Interest rate swap agreement | Other Liabilities | Quoted Prices with Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Derivative [Line Items]
Interest rate swap agreement - liability			$ 24,600,000			$ 25,000,000.0

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The estimated value of gains (losses), gross anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments.

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Nominal or face amount used to calculate payments on the derivative asset.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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