| Cover | Sep. 26, 2024 |
| Entity Addresses [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 26, 2024 |
| Entity File Number | 001-42285 |
| Entity Registrant Name | Foxx Development Holdings Inc. |
| Entity Central Index Key | 0002013807 |
| Entity Tax Identification Number | 99-5119494 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 15375 Barranca Parkway C106 |
| Entity Address, City or Town | Irvine |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92618 |
| City Area Code | 201 |
| Local Phone Number | 962-5550 |
| 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 |
| Common stock, par value $0.0001 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | FOXX |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50 | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Redeemable Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50 |
| Trading Symbol | FOXXW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Entity Addresses [Line Items] | |
| Entity Registrant Name | Acri Capital Merger Sub I Inc. |
| Entity Address, Address Line One | 13284 Pond Springs Rd |
| Entity Address, Address Line Two | Ste 405 |
| Entity Address, City or Town | Austin |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78729 |
