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Schedule of Restricted Stock Unit Activity (Detail) (Restricted Stock, USD $)
6 Months Ended
Jun. 29, 2012
Jul. 01, 2011
Restricted Stock
   
Shares    
Non-vested - beginning of year 4,854,587  
Granted 2,304,298  
Vested (2,042,116)  
Forfeited (1,028,297)  
Non-vested - end of period 4,088,472  
Weighted Average Grant Date Fair Value    
Non-vested - beginning of year $ 6.29  
Granted $ 3.95 $ 5.37
Vested $ 6.25  
Forfeited $ 6.52  
Non-vested - end of period $ 4.93