Name:	slab_LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity
Namespace Prefix:	slab_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the information pertaining to increase in additional borrowing capacity based on a percentage of EBITDA.

No definition available.

Name:	slab_LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacityBasedOnEbitda
Namespace Prefix:	slab_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the maximum ratio of total debt to earnings before interest expense, income taxes and noncash items (such as depreciation, depletion and amortization expense, unrealized gains and losses on commodity derivatives, ceiling test write-downs, and goodwill impairments) permitted under credit facilities' covenants.

No definition available.

Name:	slab_LineOfCreditFacilityMaximumLeverageRatio
Namespace Prefix:	slab_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Represents the maximum ratio of total secured debt to earnings before interest expense, income taxes and noncash items (such as depreciation, depletion and amortization expense, unrealized gains and losses on commodity derivatives, ceiling test write-downs, and goodwill impairments) permitted under credit facilities' covenants.

No definition available.

Name:	slab_LineOfCreditFacilityMaximumSecuredLeverageRatio
Namespace Prefix:	slab_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Represents the minimum ratio of earnings before interest expense, income taxes and noncash items (such as depreciation, depletion and amortization expense, unrealized gains and losses on commodity derivatives, ceiling test write-downs, and goodwill impairments) to interest payments permitted under credit facilities' covenants.

No definition available.

Name:	slab_LineOfCreditFacilityMinimumInterestCoverageRatio
Namespace Prefix:	slab_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

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

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

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

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.

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	na
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