| Cover | Sep. 05, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 05, 2024 |
| Entity File Number | 001-40933 |
| Entity Registrant Name | ExcelFin Acquisition Corp. |
| Entity Central Index Key | 0001852749 |
| Entity Tax Identification Number | 86-2933776 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 100 Kingsley Park Drive |
| Entity Address, City or Town | Fort Mill |
| Entity Address, State or Province | SC |
| Entity Address, Postal Zip Code | 29715 |
| City Area Code | 917 |
| Local Phone Number | 209-8581 |
| Written Communications | true |
| 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 Classa Common Stock And Onehalf Of One Redeemable Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock and one-half of one redeemable warrant |
| Trading Symbol | XFINU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | XFIN |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants Each Whole Warrant Exercisable For One Share Of Classa Common Stock At An Exercise Price Ofdollar 11. 50 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 |
| Trading Symbol | XFINW |
| Security Exchange Name | NASDAQ |
