Balance Sheet Components - Summary of Property Plant and Equipment (Parenthetical) (Detail) - Planet Labs Inc [Member] - USD ($) $ in Thousands	Oct. 31, 2021	Jan. 31, 2021	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 348,256	$ 343,599	$ 354,327
Satellites [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	306,989	302,577	314,097
In Process And Not In Service [Member] \| Satellites [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 9,100	$ 13,300	$ 48,800

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	debit
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