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Shares Repurchased and Dividends - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended						9 Months Ended
	May 30, 2020	Oct. 23, 2019	Oct. 22, 2019	Jan. 02, 2019	May 30, 2020	Feb. 29, 2020	Nov. 30, 2019	May 25, 2019	Feb. 23, 2019	Nov. 24, 2018	May 30, 2020
Equity, Class of Treasury Stock [Line Items]
Stock Repurchased During Period, Value				$ 100.0
Shares repurchased (in shares)	314,917				46,667						117,767
Total cost of shares repurchased divided by the total number of shares repurchased	$ 165.96				$ 161.65						$ 184.67
Class B Common Stock
Equity, Class of Treasury Stock [Line Items]
Quarterly dividend amount (in dollars per share)		$ 0.20	$ 0.09		0.20	$ 0.20	$ 0.20	$ 0.0900	$ 0.0900	$ 0.0900
Common Stock
Equity, Class of Treasury Stock [Line Items]
Quarterly dividend amount (in dollars per share)		$ 0.25	$ 0.1125		$ 0.25	$ 0.25	$ 0.25	$ 0.1125	$ 0.1125	$ 0.1125

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Stock repurchased price per share.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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