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Employee Stock Purchase and Stock Option Plans (Narrative) (Details) $ in Millions | 12 Months Ended
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Sep. 27, 2019 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Proceeds from stock options exercised | $ | $ 37.8
1999 SIP | Restricted Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Restricted stock and restricted stock units outstanding (in shares) | 95,626
1999 SIP | Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercisable options outstanding, weighted average remaining contractual life (years) | 2 years 1 month 6 days
1999 ODSP |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercisable options outstanding, weighted average remaining contractual life (years) | 4 years 1 month 24 days
1999 ODSP | Restricted Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Restricted stock and restricted stock units outstanding (in shares) | 0

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