Debt (Private Placement Debt) (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 03, 2022	Aug. 28, 2021
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Interest rate	2.65%
Maturity date	Jul. 28, 2023
Private Placement Debt [Member] | Senior Notes Series A [Member]
Debt Instrument [Line Items]
Principal amount	$ 75,000	$ 75,000
Interest rate	2.65%
Maturity date	Jul. 28, 2023
Private Placement Debt [Member] | Senior Notes Series B [Member]
Debt Instrument [Line Items]
Principal amount	$ 100,000	100,000
Interest rate	2.90%
Maturity date	Jul. 28, 2026
Private Placement Debt [Member] | Senior Notes Due June 11, 2025 [Member]
Debt Instrument [Line Items]
Principal amount	$ 20,000	20,000
Interest rate	3.79%
Maturity date	Jun. 11, 2025
Private Placement Debt [Member] | Senior notes, Due March 5, 2027 [Member]
Debt Instrument [Line Items]
Principal amount	$ 50,000	$ 50,000
Interest rate	2.60%
Maturity date	Mar. 05, 2027