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Employee Investment Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Nov. 25, 2012
Nov. 27, 2011
Nov. 28, 2010
Disclosure of Employee Investment Plans [Abstract]      
ESIP Employer contributions match (percent) 125.00%    
ESIP Employer contribution match, percent of employee's eligible compensation, maximum (percent) 6.00%    
ESIP Compensation expense $ 11.0 $ 10.3 $ 9.7