Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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Income Taxes - Summary Of Valuation Allowance (Detail) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Feb. 01, 2020
Valuation Allowance [Line Items]
Valuation allowance	$ 38,051,098	$ 35,711,205
Rigetti Holdings [Member]
Valuation Allowance [Line Items]
Valuation allowance	4,672,209		$ 4,672,209
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,339,894	$ 12,427,880
Rigetti Holdings [Member] \| Current Year Increase Decrease [Member]
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	0
Rigetti Holdings [Member] \| Prior Year Adjustment Increase Decrease [Member]
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0