Represents the number of nearly identical actions filed against other companies with which a class action complaint against the entity is being coordinated.

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- Definition

Represents the number of coordinated cases nearly identical to a class action complaint against the entity intended to serve as test, or "focus" cases and for which the decision granting class certification has been vacated.

+ Details

Name:	slab_ClassActionComplaintNumberOfFocusCases
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- Definition

Represents the number of investment banking firms against whom a class action complaint has been filed for violations. These firms served as representatives of the underwriters in connection with the entity's initial public offering of common stock.

+ Details

Name:	slab_ClassActionComplaintNumberOfInvestmentBankingFirms
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Period Type:	duration

- Definition

Represents the number of officers of the entity who are individually named in a class action complaint.

+ Details

Name:	slab_ClassActionComplaintNumberOfOfficers
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Balance Type:	na
Period Type:	duration

- Definition

Represents the number of officers of the entity dismissed without prejudice by a court order in connection with a class action complaint.

+ Details

Name:	slab_ClassActionComplaintNumberOfOfficersDismissed
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Data Type:	xbrli:integerItemType
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- Definition

Represents the contingent liability, on a first dollar loss basis, in the event the entity causes the leased property to be sold to a third party and the sale proceeds are less than the entity's purchase option.

+ Details

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

- Definition

Represents the purchase price available to the entity for the purchase of buildings currently under an operating lease agreement.

+ Details

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

- 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.

+ Details

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Dec. 30, 2006	Oct. 26, 2002	Dec. 29, 2001	Jul. 02, 2011 400 WCC	Jul. 02, 2011 200 WCC
Commitments and Contingencies
Number of officers named in class action complaint			4
Number of investment banking firms in class action complaint			3
Number of coordinated, nearly identical actions filed against other companies			300
Number of officers dismissed by court order		4
Number of cases serving as focus cases	6
Loss contingency
Purchase option price for buildings (in dollars)				$ 44.3	$ 50.1
Contingent liability on sale of leased property to third party (in dollars)				$ 35.3	$ 40.0