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Earnings Per Share - Additional Information (Detail) (USD $)
In Millions, except Per Share data
3 Months Ended 9 Months Ended
Sep. 09, 2011
Sep. 10, 2010
Sep. 09, 2011
Sep. 10, 2010
Stock Option Program and Stock Appreciation Right Program | AntiDilutive Due to Loss
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earnings per share [in shares] 7.7      
Stock Option Program and Stock Appreciation Right Program | AntiDilutive Due to Exercise Price Greater Than Market Price
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earnings per share [in shares] 4.2 2.5 1.0 3.7
Stock Option Program and Stock Appreciation Right Program | AntiDilutive Due to Exercise Price Greater Than Market Price | Lower Limit
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earning per share because exercise prices exceeded market prices, exercise prices range [in USD per share] 32.16 34.11 36.22 32.16
Stock Option Program and Stock Appreciation Right Program | AntiDilutive Due to Exercise Price Greater Than Market Price | Upper Limit
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earning per share because exercise prices exceeded market prices, exercise prices range [in USD per share] 49.03 49.03 49.03 49.03
Deferred Stock Incentive | AntiDilutive Due to Loss
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earnings per share [in shares] 0.9      
Restricted Stock Units | AntiDilutive Due to Loss
       
Earnings Per Share Disclosure [Line Items]        
Securities not included in the calculation of diluted earnings per share [in shares] 2.8