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v3.21.4

Defined Contribution Plan - Additional Information (Detail) | 12 Months Ended
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Jan. 31, 2021
Four Hundred And One K Plan [Member] | Planet Labs Inc [Member] |
Defined contribution plan, Employer matching contribution, Percent of match | 0.00%

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=dmyq_FourHundredAndOneKPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=dmyq_PlanetLabsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |