Debt (Private Placement Debt) (Narrative) (Details) - Private Placement Debt [Member] - USD ($)	9 Months Ended
	May 28, 2022	Aug. 28, 2021
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Principal amount	$ 75,000,000	$ 75,000,000
Interest rate	2.65%
Maturity date	Jul. 28, 2023
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Principal amount	$ 100,000,000	100,000,000
Interest rate	2.90%
Maturity date	Jul. 28, 2026
Senior Notes Due June 11, 2025 [Member]
Debt Instrument [Line Items]
Principal amount	$ 20,000,000	20,000,000
Interest rate	3.79%
Maturity date	Jun. 11, 2025
Senior notes, Due March 5, 2027 [Member]
Debt Instrument [Line Items]
Principal amount	$ 50,000,000	$ 50,000,000
Interest rate	2.60%
Maturity date	Mar. 05, 2027