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Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
Earnings Per Share (Details) (USD $)	Aug. 30, 2014	Aug. 31, 2013	Aug. 30, 2014	Aug. 31, 2013
Earnings Per Share Antidilutive Shares [Line Items]
Antidilutive shares not used in calculating diluted earnings per share calculations	416,544	449,466	410,278	449,466
Antidilutive Weighted Average Share Price Excluded From Computation Of Earnings Per Share Amount	$ 48.89	$ 39.58	$ 48.93	$ 39.58
Earnings Per Share Reconciliation [Line Items]
Weighted-average common shares - basic	50,053,000	49,913,000	49,973,000	49,888,000
Equivalent Shares From Share Based Compensations Plans	1,244,000	1,214,000	1,269,000	1,214,000
Weighted-average common and common equivalent shares - diluted	51,297,000	51,127,000	51,242,000	51,102,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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