Recently Issued Accounting Standards (Narrative) (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
Basic	$ 0.94		$ 0.81	$ 1.90	$ 1.70
Diluted	57,213		61,313	56,910	61,361
Excess tax benefits from stock-based compensation, operating					$ 267
Excess tax benefits from stock-based compensation, financing					$ 267
Accounting Standards Update 2015-17 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long-term liabilities	$ 46,627			$ 46,627
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for income taxes		$ 33,257
Basic		$ 0.96
Diluted		56,608
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for income taxes	$ (1,803)			$ (1,988)
Basic	$ 0.03			$ 0.03
Diluted	164			100
Excess tax benefits from stock-based compensation, operating				$ 525
Excess tax benefits from stock-based compensation, financing				$ 525