Annual report pursuant to Section 13 and 15(d)

Stock-Based Incentive Compensation Plans (Schedule Of Share-based Compensation, Stock Options, Activity) (Details)

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Stock-Based Incentive Compensation Plans (Schedule Of Share-based Compensation, Stock Options, Activity) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 25, 2010
Dec. 26, 2009
Stock-Based Incentive Compensation Plans [Abstract]      
Options Outstanding at beginning of year, Number of Shares 37 42 58
Granted, Number of Shares 8 5 10
Cancelled, Number of Shares (6) (6) (25)
Exercised, Number of Shares (5) (4) (1)
Options Outstanding at end of year, Number of Shares 34 37 42
Exercisable at end of year, Number of Shares 25 28 24
Outstanding at beginning of year, Weighted-Average Exercise Price $ 7.77 $ 8.65 $ 11.97
Granted, Weighted-Average Exercise Price $ 7.16 $ 7.77 $ 4.24
Cancelled, Weighted-Average Exercise Price $ 12.54 $ 16.92 $ 14.20
Exercised, Weighted-Average Exercise Price $ 3.82 $ 3.35 $ 3.09
Outstanding at end of year, Weighted-Average Exercise Price $ 7.36 $ 7.77 $ 8.65
Exercisable at end of year, Weighted-Average Exercise Price $ 7.48 $ 8.24 $ 12.04