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Share-Based Compensation (Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions) (Details) (USD $)	3 Months Ended
	Mar. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility (%)	33.30%
Expected term (yrs)	9 years 0 months 19 days
Risk-free rate (%)	2.00%
Fair value per option	$ 39.11

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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