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Earnings Per Share Earnings Per Share - Potential Common Shares Excluded in the Computation of Diluted Earnings Per Share Because They Would Have Been Antidilutive (Details)
In Millions, unless otherwise specified
3 Months Ended
Nov. 29, 2012
Dec. 01, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive potential common shares that could dilute basic earnings per share in the future (in shares) 356.8 285.5