| Cover | Dec. 16, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 16, 2024 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-41168 |
| Entity Registrant Name | FTAC EMERALD ACQUISITION CORP. |
| Entity Central Index Key | 0001889123 |
| Entity Tax Identification Number | 86-2170416 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2929 Arch Street |
| Entity Address, Address Line Two | Suite 1703 |
| Entity Address, City or Town | Philadelphia |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19104 |
| City Area Code | 215 |
| Local Phone Number | 701-9555 |
| 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 Class A common stock, par value $0.0001 per share, and one-half of one redeemable warrant | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock, par value $0.0001 per share, and one-half of one redeemable warrant |
| Trading Symbol | FLDDU |
| Security Exchange Name | NASDAQ |
| Shares of Class A common stock, par value $0.0001 per share, included as part of the units | |
| Title of 12(b) Security | Shares of Class A common stock, par value $0.0001 per share, included as part of the units |
| Trading Symbol | FLD |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each exercisable for one share of Class A common stock for $11.50 per share | |
| Title of 12(b) Security | Redeemable warrants, each exercisable for one share of Class A common stock for $11.50 per share |
| Trading Symbol | FLDDW |
| Security Exchange Name | NASDAQ |
