Stock-based Compensation (Narrative) (Details) $ / shares in Units, shares in Thousands	3 Months Ended
Dec. 28, 2019 USD ($) shares / unit $ / shares shares	Dec. 29, 2018 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock Issuable per Restricted Stock Unit \| shares / unit	1
ESPP maximum contribution percentage	10.00%
ESPP maximum contribution amount by employee	$ 25,000
ESPP purchase price as a % of stock price	85.00%
Stock-based compensation	$ 27,936,000	$ 29,407,000
TSR Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares \| shares	89
Granted (in USD per share) \| $ / shares	$ 106.69
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 1,500,000	$ 1,300,000
Catch-Up Provision \| TSR Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares \| shares	178

ESPP maximum contribution amount by employee

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- Definition

ESPP maximum contribution percentage

+ References

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- Definition

ESPP purchase price as a % of stock price

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Common Stock Issuable per Restricted Stock Unit

+ References

No definition available.

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- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

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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