XML 25 R30.htm IDEA: XBRL DOCUMENT

Employee Share-Based Compensation (Details) (Assumptions For Options Granted [Member])	9 Months Ended
	Sep. 29, 2012
Assumptions For Options Granted [Member]
Volatility	33.14%
Expected dividends	0.00%
Expected term	5 years 9 months 18 days
Risk-free rate	1.02%

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.

+ References+ Details