Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands			9 Months Ended
	May. 31, 2015	Apr. 02, 2015	May. 30, 2015	May. 31, 2014	Jun. 23, 2015
Components Of Shareholders Equity [Line Items]
Dividend payout			$ 259,546
Payment of special cash dividend			185,403
Payments of regular cash dividends	$ 62,010		74,143	$ 62,010
Purchase of treasury stock			$ 26,411
Shares repurchased by the company for associates' tax withholding liability associated with share-based compensation			112
Subsequent Event [Member]
Components Of Shareholders Equity [Line Items]
Dividend declared, per share					$ 0.40
Dividend payable date			Jul. 28, 2015
Dividend record date			Jul. 14, 2015
Dividend payout		$ 24,684
Class A Common Stock [Member]
Components Of Shareholders Equity [Line Items]
Class A common stock shares repurchased			344
Class A Treasury Stock [Member]
Components Of Shareholders Equity [Line Items]
Maximum number of shares that may yet be repurchased			1,843
Class A common stock shares repurchased			344
Purchase of treasury stock			$ 26,411