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Stock Plans (Weighted-Average Assumptions Used in the Black-Scholes Option Pricing Model) (Details)
12 Months Ended
Jan. 01, 2012
Jan. 02, 2011
Jan. 03, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Risk-free interest rate 1.90% 1.80% 1.60%
Expected dividend yield 1.10% 1.40% 1.90%
Expected lives, years 4 4 4
Expected stock volatility 38.10% 37.50% 35.00%