AdditionalborrowingcapacityonRevolvingCreditFacility

No definition available.

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Namespace Prefix:	swks_
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Period Type:	instant

- Definition

Debt Instrument Covenant Compliance Maximum Leverage Ratio

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of debt and lease obligation, classified as current.

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Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

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Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Balance Type:	na
Period Type:	duration

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
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Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Debt (Details) - USD ($) $ in Thousands	12 Months Ended
Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021	Oct. 02, 2020	Jul. 26, 2021	May 26, 2021
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ (10,900)	$ (14,400)
Debt, Long-Term and Short-Term, Combined Amount	2,189,100
Long-term Debt	1,689,900	2,235,600
Debt, Current	499,200	0
AdditionalborrowingcapacityonRevolvingCreditFacility	250,000
Proceeds from Issuance of Debt	0	2,488,200	$ 0
Excess tax benefit from share-based compensation	50,000	250,000	0
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Proceeds from Issuance of Debt	0	2,488,200	$ 0
Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 700,000	750,000
Debt Instrument, Interest Rate, Effective Percentage	2.11%
Debt Instrument Covenant Compliance Maximum Leverage Ratio [Line Items]	3.0
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,000,000
Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value		1,523,100
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0
Debt Instrument Covenant Compliance Maximum Leverage Ratio [Line Items]	3.0
Line of Credit Facility, Maximum Borrowing Capacity	$ 750,000
2023 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000	500,000			$ 500,000
Debt Instrument, Interest Rate, Effective Percentage	1.15%
Long-term Debt		497,900
Debt Instrument, Interest Rate, Stated Percentage					0.90%
2023 Notes \| Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value		501,000
2026 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000	500,000			$ 500,000
Debt Instrument, Interest Rate, Effective Percentage	1.97%
Long-term Debt	$ 496,800	496,000
Debt Instrument, Interest Rate, Stated Percentage					1.80%
2026 Notes \| Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value	431,200	507,500
2031 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000	500,000			$ 500,000
Debt Instrument, Interest Rate, Effective Percentage	3.13%
Long-term Debt	$ 494,500	493,900
Debt Instrument, Interest Rate, Stated Percentage					3.00%
2031 Notes \| Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value	$ 377,600	$ 514,600
the Notes
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.00%