Stockholders' Equity Schedule Of Weighted Average Assumptions Used in Calculating Share-Based Performance Awards (Details) (Performance Shares [Member])	12 Months Ended
Oct. 03, 2014
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility of common stock	36.96%
Average volatility of peer companies	29.59%
Average correlation coefficient of peer group	0.472
Risk free interest rate	0.11%

Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumption Correlation Coefficient Of Peer Group

No definition available.

+ Details

Name:	swks_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionCorrelationCoefficientOfPeerGroup
Namespace Prefix:	swks_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumption Volatility of Peer Group

+ References

No definition available.

+ Details

Name:	swks_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionVolatilityofPeerGroup
Namespace Prefix:	swks_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average expected volatility rate of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration