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Stockholders' Equity (Details) (USD $)
In Thousands, except Share data in Millions, unless otherwise specified
3 Months Ended 1 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Mar. 29, 2014
Unrealized Gain on Cash Flow Hedge
Mar. 29, 2014
Net Unrealized Losses on Available-For-Sale Securities
Jan. 31, 2014
Maximum
Jan. 31, 2013
Maximum
Apr. 30, 2012
Maximum
Stockholders' Equity              
Number of shares of common stock issued 0.7            
Stockholders' Equity              
Program Amount authorized to repurchase         $ 100,000 $ 50,000 $ 100,000
Components of accumulated other comprehensive loss, net of taxes              
Balance at beginning of the period (684)   333 (1,017)      
Other comprehensive income (loss) before reclassifications 177   (91) 268      
Amounts reclassified from accumulated other comprehensive loss 93   93        
Other comprehensive income 270 71 2 268      
Balance at end of the period $ (414)   $ 335 $ (749)