The portion of the carrying value of long-term convertible debt as of the balance sheet date that is scheduled to be repaid within one year or in the normal operating cycle if longer. Convertible debt is a financial instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Debt, Convertible Notes, and Warrants - Summary of the Company's Debt Balance And Outstanding (Detail) - USD ($)			9 Months Ended	12 Months Ended
	Jun. 05, 2020	Jun. 21, 2019	Oct. 31, 2021	Jan. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Net Carrying Value Long-term					$ 96,000
Planet Labs Inc.
Debt Instrument [Line Items]
Net Carrying Value Long-term			$ 174,925,000	$ 163,856,000
Net Carrying Value Principal Balance			6,035,000	6,035,000
Planet Labs Inc. \| Venture Tranche B [Member]
Debt Instrument [Line Items]
Net Carrying Value Current			7,841,000	8,244,000
Net Carrying Value Long-term
Net Carrying Value Principal Balance			$ 6,035,000	6,035,000
Contractual Interest Rate
Planet Labs Inc. \| 2020 Convertible Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value Current			$ 102,112,000
Net Carrying Value Long-term				92,968,000
Net Carrying Value Principal Balance			$ 71,125,000	$ 71,125,000
Contractual Interest Rate			6.00%	6.00%
Maturity Date			Jun. 22, 2022	Jun. 22, 2022
Planet Labs Inc. \| SVB & Hercules Loan [Member]
Debt Instrument [Line Items]
Net Carrying Value Current			$ 64,972,000
Net Carrying Value Long-term				$ 62,644,000
Net Carrying Value Principal Balance	$ 15,000,000	$ 50,000,000	$ 66,950,000	$ 66,950,000
Contractual Interest Rate	11.00%	11.00%	11.00%	11.00%
Maturity Date	Jun. 21, 2022	Jun. 30, 2022	Jun. 21, 2022	Jun. 21, 2022