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Investments and Fair Value Measurements-Cash and Mkt Securities (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2013
Dec. 30, 2012
Sep. 30, 2012
Jan. 01, 2012
Cash, Cash Equivalents and Marketable Securities [Abstract]        
Cash and Cash Equivalents $ 902,765 $ 995,470 $ 1,110,485 $ 1,167,496
Short-term marketable securities 1,142,616 1,880,034    
Long-term marketable securities 2,243,700 2,835,931    
Total cash, cash equivalents and marketable securities $ 4,289,081 $ 5,711,435