Stock-Based Compensation (Weighted-Average Assumptions to Estimates Fair Value of Stock Options Granted) (Details)
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3 Months Ended | 9 Months Ended | ||||||||||||||
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Sep. 07, 2013
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Sep. 08, 2012
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Sep. 07, 2013
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Sep. 08, 2012
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Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||||||||||||||
Expected market price volatility (percent) | 30.80% | [1] | 36.90% | [1] | 33.30% | [1] | 37.80% | [1] | ||||||||
Risk-free interest rate (percent) | 1.10% | [2] | 0.50% | [2] | 0.60% | [2] | 0.60% | [2] | ||||||||
Dividend yield (percent) | 1.00% | [3] | 1.30% | [3] | 1.20% | [3] | 1.30% | [3] | ||||||||
Expected term (years) | 4 years | [4] | 4 years | [4] | 4 years | [4] | 4 years | [4] | ||||||||
Historical volatility term | 4 years | |||||||||||||||
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