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Debt (Private Placement Debt) (Narrative) (Details) - Private Placement Debt [Member] - USD ($) | 6 Months Ended |
--- | --- | ---
Feb. 27, 2021 | Aug. 29, 2020
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 |

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