| Cover | Nov. 29, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 29, 2021 |
| Entity File Number | 001-39383 |
| Entity Registrant Name | Malacca Straits Acquisition Co Ltd |
| Entity Central Index Key | 0001807594 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | Unit 601-2 |
| Entity Address, Address Line Two | St. George’s Building |
| Entity Address, City or Town | 2 Ice House Street Central, |
| Entity Address, Country | HK |
| Entity Address, Postal Zip Code | 00000 |
| City Area Code | 852 |
| Local Phone Number | 21060888 |
| 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 Class A Ordinary Share and one-half of one Redeemable Warrant | |
| Title of 12(b) Security | Units, each consisting of one Class A Ordinary Share and one-half of one Redeemable Warrant |
| Trading Symbol | MLACU |
| Security Exchange Name | NASDAQ |
| Class A Ordinary Shares, par value $0.0001 per share | |
| Title of 12(b) Security | Class A Ordinary Shares, par value $0.0001 per share |
| Trading Symbol | MLAC |
| Security Exchange Name | NASDAQ |
| Warrants, each whole warrant exercisable for one Class A Ordinary Share for $11.50 per share | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one Class A Ordinary Share for $11.50 per share |
| Trading Symbol | MLACW |
| Security Exchange Name | NASDAQ |
