| Cover | Nov. 30, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 30, 2021 |
| Entity File Number | 001-40970 |
| Entity Registrant Name | Deep Medicine Acquisition Corp. |
| Entity Central Index Key | 0001857086 |
| Entity Tax Identification Number | 85-3269086 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 595 Madison Avenue |
| Entity Address, Address Line Two | 12th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10017 |
| City Area Code | (917) |
| Local Phone Number | 289-2776 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one share of Class A Common Stock and one Right | |
| Title of 12(b) Security | Units, each consisting of one share of Class A Common Stock and one Right |
| Trading Symbol | DMAQU |
| Security Exchange Name | NASDAQ |
| Class A Common Stock, par value $0.0001 per share | |
| Title of 12(b) Security | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | DMAQ |
| Security Exchange Name | NASDAQ |
| Rights, each exchangeable into one-tenth of one share of Class A Common Stock | |
| Title of 12(b) Security | Rights, each exchangeable into one-tenth of one share of Class A Common Stock |
| Trading Symbol | DMAQR |
| Security Exchange Name | NASDAQ |
