Private Placement	9 Months Ended
Private Placement	Sep. 30, 2025
Disclosure Of Private Placement [Abstract]
Private Placement	NOTE 4. PRIVATE PLACEMENT Simultaneously with the closing of the Initial Public Offering, the Company consummated the private sale (the “Private Placement”) of an aggregate of 12,000,000 warrants (the “Private Placement Warrants”) allocating 11,600,000 warrants to AltEnergy Acquisition Sponsor LLC (the “Sponsor”) and 400,000 warrants to an affiliate of the underwriter at a purchase price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company in the amount of $12,000,000. A portion of the proceeds from the Private Placement Units was added to the proceeds from the Initial Public Offering held in the Trust Account. If the Company does not complete a Business Combination within the Combination Period, the proceeds from the sale of the Private Placement Units held in the Trust Account will be used to fund the redemption of the Public Shares (subject to the requirements of applicable law) and the Private Placement Units will be worthless. The Private Placement Warrants (including the shares of Class A common stock issuable upon exercise of the Private Placement Warrants) will not be transferable, assignable or salable until 30 days after the completion of an Initial Business Combination, subject to certain exceptions. On December 31, 2024, Sponsor forfeited 4,000,000 of the 11,600,000 Private Placement warrants it purchased in connection with the Company’s IPO for no consideration.

AltEnergy Acquisition Corp 10-Q