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Segment Information (Concentration) (Details) | 12 Months Ended
--- | ---
Sep. 27, 2013 | Sep. 28, 2012 | Sep. 30, 2011
Company A [Member] | Customer One [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Revenue from major customers percentage | 36.00% |  | 27.00%
Company A [Member] | Customer Two [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Revenue from major customers percentage |  | 29.00% |
Company B [Member] | Customer Two [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Revenue from major customers percentage | 15.00% |  | 11.00%
Company B [Member] | Customer Three [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Revenue from major customers percentage |  | 17.00% |
Company C [Member] | Customer Three [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Revenue from major customers percentage |  |  | 13.00%
Credit Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Accounts Receivable From Major Customers Percentage | 51.00% | 60.00% | 53.00%

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- Definition Accounts Receivable From Major Customers Percentage + References No definition available. + Details
Name: | swks_AccountsReceivableFromMajorCustomersPercentage
Namespace Prefix: | swks_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration