Recently Issued Accounting Standards (Schedule Of Income Statement Impact) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 04, 2017	Dec. 03, 2016	Feb. 27, 2016	Mar. 04, 2017	Feb. 27, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for income taxes	$ 30,246		$ 30,625	$ 63,503	$ 64,654
Net income	$ 53,559		$ 49,525	$ 107,847	$ 104,554
Basic	$ 0.94		$ 0.81	$ 1.90	$ 1.70
Diluted	$ 0.93		$ 0.80	$ 1.89	$ 1.70
Basic	56,620		61,187	56,500	61,242
Diluted	57,213		61,313	56,910	61,361
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for income taxes		$ 33,257
Net income		$ 54,288
Basic		$ 0.96
Diluted		$ 0.96
Basic		56,381
Diluted		56,608
Scenario, Previously Reported [Member] | Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for income taxes		$ 33,442
Net income		$ 54,103
Basic		$ 0.96
Diluted		$ 0.95
Basic		56,381
Diluted		56,572