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Significant Accounting Policies (Fair Value Assumptions Of Option Grant Date Award) (Details)	12 Months Ended
	Oct. 02, 2015	Sep. 26, 2014	Sep. 27, 2013
Awards Made to Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield (percent)	0.00%	0.00%	0.00%
Expected volatility (percent)	27.00%	34.25%	38.37%
Risk-free interest rate (percent)	1.67%	1.79%	1.11%
Expected term of options (in years)	5 years 9 months 26 days	5 years 9 months 26 days	5 years 9 months 26 days
Awards Made to Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield (percent)	0.00%	0.00%	0.00%
Expected volatility (percent)	29.28%	35.30%	37.65%
Risk-free interest rate (percent)	1.63%	1.76%	0.95%
Expected term of options (in years)	5 years 9 months 26 days	5 years 9 months 26 days	5 years 9 months 26 days

X

- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (f)(2)(iii)



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- Definition

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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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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-Section S99



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