| Document and Entity Information | Jul. 14, 2022 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001821742 |
| Document Type | 8-K |
| Document Period End Date | Jul. 14, 2022 |
| Entity Registrant Name | DPCM Capital, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39638 |
| Entity Tax Identification Number | 85-0525645 |
| Entity Address, Address Line One | 382 NE 191 Street |
| Entity Address, Address Line Two | #24148 |
| Entity Address, City or Town | Miami |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33179 |
| City Area Code | (305) |
| Local Phone Number | 857-5086 |
| Written Communications | true |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Units Each Consisting Of One Share Of Class A Common Stock And One Third Of One Warrant 2 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Units, each consisting of one share of Class A Common Stock and one-third of one Warrant |
| Trading Symbol | XPOA.U |
| Security Exchange Name | NYSE |
| Class A Common Stock Par Value 0.0001 Per Share 1 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | XPOA |
| Security Exchange Name | NYSE |
| Warrants Each Whole Warrant Exercisable For One Share Of Class A Common Stock At An Exercise Price Of 11.50 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 |
| Trading Symbol | XPOA WS |
| Security Exchange Name | NYSE |
