| Cover | Jul. 25, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jul. 25, 2023 |
| Entity File Number | 001-40218 |
| Entity Registrant Name | Plum Acquisition Corp. I |
| Entity Central Index Key | 0001840317 |
| Entity Tax Identification Number | 98-1577353 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 201 Fillmore St. |
| Entity Address, Address Line Two | #2089 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94115 |
| City Area Code | 415 |
| Local Phone Number | 683-6773 |
| 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 |
| Capital Units [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-fifth of one redeemable warrant |
| Trading Symbol | PLMIU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Ordinary Shares included as part of the Units |
| Trading Symbol | PLMI |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 |
| Trading Symbol | PLMIW |
| Security Exchange Name | NASDAQ |
