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Capital Stock (Weighted-average Assumptions Used to Value Grants) (Details)
9 Months Ended
Sep. 06, 2014
Sep. 07, 2013
Minimum [Member]
Sep. 07, 2013
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life (in years) 6 years 3 months 6 years 3 months 6 years 6 months
Expected stock volatility 27.90% 31.60% 33.00%
Risk-free interest rate 2.00% 1.10% 1.90%
Expected dividend yield during the expected term 2.80% 3.80% 4.00%