Annual report pursuant to Section 13 and 15(d)

Common Stock and Stockholders??? Equity (Deficit) (Details) (Stock Option Activities)

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Common Stock and Stockholders’ Equity (Deficit) (Details) (Stock Option Activities) - Stock Options - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Number of Shares      
Stock options, shares outstanding at beginning of year 32 36 35
Stock options, shares granted 2 8 8
Stock options, shares canceled (9) (9) (4)
Stock options, shares exercised (5) (3) (3)
Stock options, shares outstanding at end of year 20 32 36
Stock options, shares exercisable at end of year 13 21 23
Weighted- Average Exercise Price      
Stock options, shares outstanding at beginning of year, weighted average exercise price (USD per share) $ 4.44 $ 4.78 $ 5.08
Stock options, shares granted, weighted average exercise price (USD per share) 6.98 2.12 3.73
Stock options, shares canceled, weighted average exercise price (USD per share) 5.53 4.91 7.64
Stock options, shares exercised, weighted average exercise price (USD per share) 4.75 1.61 1.47
Stock options, shares outstanding at end of year, weighted average exercise price (USD per share) 4.15 4.44 4.78
Stock options, shares exercisable at end of year, weighted average exercise price (USD per share) $ 4.32 $ 5.34 $ 5.28