Document and Entity Information
| Document and Entity Information | Feb. 24, 2023 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001833764 |
| Document Type | 8-K |
| Document Period End Date | Feb. 24, 2023 |
| Entity Registrant Name | ABG ACQUISITION CORP. I |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-40072 |
| Entity Tax Identification Number | 98-1568635 |
| Entity Address, Address Line One | 430 Park 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 | 10022 |
| City Area Code | (646) |
| Local Phone Number | 829-9373 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Ordinary Shares, par value $0.0001 per Share |
| Trading Symbol | ABGI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |