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Weighted-Average Stock Options and Warrants Outstanding Not included in Computation of Diluted Shares Outstanding (Detail) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Debt instrument, face amount 320.0   320.0  
Number of stock options
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from the computation of EPS 2,585 3,303 2,070 2,135
Number of stock warrants
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from the computation of EPS 3,704 4,939 4,445 4,939