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Stock-Based Awards - Stock-Settled Restricted Stock Units (Details) - Stock-settled Restricted Stock Units [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 27, 2015
Dec. 28, 2014
Dec. 29, 2013
Restricted Stock Units (in shares):      
Unvested stock-settled restricted stock units at beginning of period 1,059    
Granted 574    
Vested (386)    
Forfeited (88)    
Unvested stock-settled restricted stock units at end of period 1,159 1,059  
Unvested stock-settled restricted stock units expected to vest at end of period 1,064    
Weighted Average Grant-Date Fair Value (in dollars per share):      
Unvested stock-settled restricted stock units at beginning of period $ 10    
Granted 14    
Vested 8    
Forfeited 13    
Unvested stock-settled restricted stock units at end of period 13 $ 10  
Unvested stock-settled restricted stock units expected to vest at end of period $ 13    
Restricted stock units vested, intrinsic value $ 5.5 $ 5.8 $ 1.9
Five-year vesting [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 5 years    
Three-year vesting [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   3 years 3 years