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Borrowings - Long-term Debt Footnote (Narrative) (Details)	12 Months Ended
	Sep. 27, 2019	Sep. 28, 2018
New Credit Agreement | Minimum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.875%
New Credit Agreement | Minimum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.00%
New Credit Agreement | Minimum | LIBOR
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.00%
New Credit Agreement | Maximum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.50%
New Credit Agreement | Maximum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.50%
Revolving Credit Facility | Minimum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.00%
Revolving Credit Facility | Minimum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.00%
Revolving Credit Facility | Maximum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.50%
Revolving Credit Facility | Maximum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	50.00%
Revolving Credit Facility | Revolving Credit Facility | Minimum | LIBOR | Line of Credit
Line of Credit Facility [Line Items]
Stated interest rate		1.38%
Revolving Credit Facility | Revolving Credit Facility | Maximum | LIBOR | Line of Credit
Line of Credit Facility [Line Items]
Stated interest rate		3.47%
Term Loan Facility | Minimum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.00%
Term Loan Facility | Minimum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.00%
Term Loan Facility | Maximum | Eurocurrency Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	1.50%
Term Loan Facility | Maximum | Base Interest Rate
Line of Credit Facility [Line Items]
Margin added to variable rate interest rate	0.50%
Term Loan Facility | Revolving Credit Facility | Minimum | LIBOR | Line of Credit
Line of Credit Facility [Line Items]
Stated interest rate	3.05%
Term Loan Facility | Revolving Credit Facility | Maximum | LIBOR | Line of Credit
Line of Credit Facility [Line Items]
Stated interest rate		3.71%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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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.

+ References

No definition available.

+ Details

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