Annual report pursuant to Section 13 and 15(d)

Common Stock and Stockholders??? Equity (Deficit) (Details) (Restricted Stock Units Activities)

v3.6.0.2
Common Stock and Stockholders’ Equity (Deficit) (Details) (Restricted Stock Units Activities) - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Restricted Stock Units      
Number of Shares      
Restricted stock units, shares nonvested at beginning of period 51.0 43.0 40.0
Restricted stock units, shares granted 29.0 38.0 23.0
Restricted stock units, shares forfeited (5.0) (15.0) (5.0)
Restricted stock units, shares vested (23.0) (15.0) (15.0)
Restricted stock units, shares nonvested at end of period 52.0 51.0 43.0
Weighted- Average Fair Value      
Restricted stock units, shares nonvested at beginning of period, weighted average grant date fair value (USD per share) $ 2.61 $ 4.05 $ 4.52
Restricted stock units, shares granted, weighted average grant date fair value (USD per share) 4.72 2.03 3.89
Restricted stock units, shares forfeited, weighted average grant date fair value (USD per share) 2.95 3.71 4.48
Restricted stock units, shares vested, weighted average grant date fair value (USD per share) 2.56 4.13 4.90
Restricted stock units, shares nonvested at end of period, weighted average grant date fair value (USD per share) $ 3.73 $ 2.61 $ 4.05
Performance-based Restricted Stock Units      
Number of Shares      
Restricted stock units, shares nonvested at beginning of period 7.0 9.0 5.0
Restricted stock units, shares granted 5.0 5.2 5.0
Restricted stock units, shares forfeited (2.0) (7.0) (1.0)
Restricted stock units, shares vested (5.0) 0.0 0.0
Restricted stock units, shares nonvested at end of period 5.0 7.0 9.0