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Employee Stock Purchase and Stock Option Plans (Information Regarding Options Outstanding, and Options Exercisable) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 29, 2017 | Sep. 30, 2016 | Oct. 02, 2015 | Sep. 26, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Nonvested not yet recognized | $ 83.7 |  |  |
Options exercisable, weighted average remaining contractual term (in years) | 4 years 9 months 19 days |  |  |
Range of exercise prices, minimum (in dollars per share) | $ 32.51 | $ 32.51 | $ 32.51 |
Range of exercise prices, maximum (in dollars per share) | $ 80.63 | $ 80.63 | $ 80.63 |
Options outstanding number (in shares) | 2,516,825 | 3,577,512 | 4,072,707 | 4,221,147
Options outstanding weighted average remaining contractual life (in years) | 5 years 4 months 13 days |  |  |
Options outstanding weighted average price (in dollars per share) | $ 46.19 | $ 45.69 | $ 46.06 | $ 53.23
Options exercisable (in shares) | 1,992,022 |  |  |
Options exercisable weighted average exercise price (in dollars per share) | $ 46.78 |  |  |
$32.51 - $37.03 |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of exercise prices, minimum (in dollars per share) | 32.51 |  |  |
Range of exercise prices, maximum (in dollars per share) | $ 37.03 |  |  |
Options outstanding number (in shares) | 247,875 |  |  |
Options outstanding weighted average remaining contractual life (in years) | 4 years 5 months 20 days |  |  |
Options outstanding weighted average price (in dollars per share) | $ 36.99 |  |  |
Options exercisable (in shares) | 247,875 |  |  |
Options exercisable weighted average exercise price (in dollars per share) | $ 36.99 |  |  |
$37.43 - $46.09 |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of exercise prices, minimum (in dollars per share) | 37.43 |  |  |
Range of exercise prices, maximum (in dollars per share) | $ 46.09 |  |  |
Options outstanding number (in shares) | 1,360,188 |  |  |
Options outstanding weighted average remaining contractual life (in years) | 5 years 7 months 17 days |  |  |
Options outstanding weighted average price (in dollars per share) | $ 42.69 |  |  |
Options exercisable (in shares) | 890,206 |  |  |
Options exercisable weighted average exercise price (in dollars per share) | $ 42.65 |  |  |
$47.11 - $55.13 |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of exercise prices, minimum (in dollars per share) | 47.11 |  |  |
Range of exercise prices, maximum (in dollars per share) | $ 55.13 |  |  |
Options outstanding number (in shares) | 836,812 |  |  |
Options outstanding weighted average remaining contractual life (in years) | 5 years 3 months 18 days |  |  |
Options outstanding weighted average price (in dollars per share) | $ 52.81 |  |  |
Options exercisable (in shares) | 788,116 |  |  |
Options exercisable weighted average exercise price (in dollars per share) | $ 52.80 |  |  |
$60.08 - $80.63 |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of exercise prices, minimum (in dollars per share) | 60.08 |  |  |
Range of exercise prices, maximum (in dollars per share) | $ 80.63 |  |  |
Options outstanding number (in shares) | 71,950 |  |  |
Options outstanding weighted average remaining contractual life (in years) | 4 years 2 months 23 days |  |  |
Options outstanding weighted average price (in dollars per share) | $ 66.92 |  |  |
Options exercisable (in shares) | 65,825 |  |  |
Options exercisable weighted average exercise price (in dollars per share) | $ 67.52 |  |  |

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- Definition Unrecognized cost of unvested share-based compensation awards. + 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 (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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