Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
	Dec. 20, 2016	Dec. 03, 2016	Nov. 28, 2015
Components Of Shareholders Equity [Line Items]
Regular dividends cash paid		$ 25,495	$ 26,391
Purchase of treasury stock		$ 2,894
Subsequent Event [Member]
Components Of Shareholders Equity [Line Items]
Dividends declared date	Dec. 20, 2016
Dividends payable per share	$ 0.45
Dividend payable date	Jan. 24, 2017
Dividends record date	Jan. 10, 2017
Dividend payable amount	$ 25,514
Regular Dividends [Member]
Components Of Shareholders Equity [Line Items]
Cash dividends paid per common share		$ 0.45	$ 0.43
Regular dividends cash paid		$ 25,495	$ 26,391
Class A Treasury Stock [Member]
Components Of Shareholders Equity [Line Items]
Class A common stock shares repurchased		40
Purchase of treasury stock		$ 2,894
Maximum number of shares that can be repurchased		1,444