Amount before tax of income (loss) from a discontinued operation excluding gain (loss) on disposal.

No definition available.

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

- Definition

Amount of cash inflow (outflow) from (to) the discontinued operation after the disposal transaction.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760

Discontinued Operations (Details) - Discontinued operations - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Jul. 26, 2021	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Transition Services Agreement
Continuing Involvement
TSA fees			$ 4,800
Infrastructure and automotive business
Discontinued Operations
Asset Purchase Agreement sale amount	$ 2,750,000
Financial results of the infrastructure and automotive business
Revenues		$ 28,203		$ 233,915
Costs of revenues		11,891		95,800
Operating expenses		(496)		46,512
Operating income from discontinued operations		16,808		91,603
Gain on sale of discontinued operations		2,423,161		2,423,161
Income from discontinued operations before income taxes		2,439,969		2,514,764
Provision for income taxes		333,173		330,880
Income from discontinued operations		$ 2,106,796		$ 2,183,884
Income from discontinued operations per share:
Basic		$ 48.56		$ 49.52
Diluted		$ 47.20		$ 48.11
Infrastructure and automotive business \| Transition Services Agreement \| Minimum
Continuing Involvement
Term of continuing involvement	3 months
Infrastructure and automotive business \| Transition Services Agreement \| Maximum
Continuing Involvement
Term of continuing involvement	18 months