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Employee Stock Purchase and Stock Incentive Plans (Stock Purchase and Stock Option Plans Information on the 1999 Plans) (Details) - shares | 12 Months Ended |
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Oct. 02, 2020 | Sep. 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized (in shares) | 30,950,000 |
Number of remaining shares reserved for issuance at September 27, 2019 (in shares) | 5,632,447 |
Number of shares relating to outstanding stock options at September 27, 2019 (in shares) | 706,489 |
Number of shares available for future awards (in shares) | 4,925,958 | 5,220,013
1999 SIP |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized (in shares) | 29,850,000 |
Number of remaining shares reserved for issuance at September 27, 2019 (in shares) | 5,272,572 |
Number of shares relating to outstanding stock options at September 27, 2019 (in shares) | 568,114 |
Number of shares available for future awards (in shares) | 4,704,458 | 4,963,761
1999 SIP | Other Than Option Stock Appreciation Rights SARS |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award number of shares, fungible share basis (in shares) | 1.92 |
Award number of shares, non-fungible share basis (in shares) | 1 |
1999 ODSP |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized (in shares) | 1,100,000 |
Number of remaining shares reserved for issuance at September 27, 2019 (in shares) | 359,875 |
Number of shares relating to outstanding stock options at September 27, 2019 (in shares) | 138,375 |
Number of shares available for future awards (in shares) | 221,500 | 256,252
Award number of shares, non-fungible share basis (in shares) | 1.92 |

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- Definition Share-based compensation arrangement by share-based payment award, award number of shares, non-fungible share basis. + References No definition available. + Details
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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
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