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Subsequent Events (Details) - USD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 14, 2024 | Nov. 12, 2024 | Nov. 07, 2024 | Nov. 05, 2024 | Oct. 30, 2024 | Sep. 19, 2024 | Aug. 22, 2024 | Apr. 18, 2024 | Jan. 21, 2024 | Jan. 11, 2024 | Dec. 15, 2023 | Dec. 13, 2023 | Apr. 18, 2023 | Sep. 30, 2024 | Sep. 30, 2024 | Dec. 31, 2023 | Nov. 13, 2024 | Sep. 10, 2024 | Dec. 31, 2022 | Jan. 19, 2022
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  |  |  |  |  | 1,100,000 |  |  |  |  |  |  | 983,333 | 30,000,000 |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 | 200,000 |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  | $ 11.29 |  |  |  |  |  |  |  |  |  | $ 9.2 |  |  |  |
Additional shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,500,000 |  |  |  |  |  |
Consecutive days |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Warrants outstanding common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 61,009 | 61,009 |  |  |  | 15,000,000 |
Sponser agreement description |  |  |  |  |  |  |  |  |  |  |  |  |  | (i) retain 2,950,000 shares of Series A Common Stock of ACAB, (ii) retain 291,667 shares, and transfer 983,333 shares to Abpro and 983,333 of the shares Abpro Bio, for such parties to use to obtain non-redemption commitments from SPAC stockholders or other capital for SPAC or the Surviving Corporation (with any shares unused for such purpose to be retained by such party), and (iii) forfeit the remainder of any Series A Common Stock and Series B Common Stock held by Sponsor (or 966,441 Series A shares and 1 Series B shares). |  |  |  |  |  |
Additional paid-in capital amount (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,300,000 | $ 14,300,000 |  |  |  |  |
Extinguishment amount (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |
Promissory note liabilities (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |
Net proceeds (in Dollars) | $ 2,755,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 94.00% | 94.00% |  |  |  |  |
Percentage of gross amount payable to sponsor raised from investors |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 61,009 | 61,009 |  |  |  |  |
VWAP [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.5 | $ 11.5 |  |  |  |  |
Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,601 |  |  |  |  |  |
Common stock share held |  |  |  |  |  |  |  |  |  |  |  |  |  | 291,667 | 291,667 |  |  |  |  |
Extinguishment amount (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |
Abpro Bio [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  |  |  |  | 622,467 |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |  |  |
Value of stock issued (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,224,670 |  |  |  |  |  |
Extinguishment amount (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,225,663 |  |  |  |  |  |
Remainder extinguishment amount (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,007 |  |  |  |  |  |
Celltrion [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10 | $ 10 |  |  |  |  |
Aggregate purchase price (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |
Underwriter [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Underwriter waived (in Dollars) |  |  |  |  |  |  |  |  | $ 4,290,000 |  |  |  |  |  |  |  |  |  |  |
Underwriter fee |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |
First Share Target [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn out shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 |  |  |  |  |  |
Trading days |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |
Consecutive days |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |
Second Share Target [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn out shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 |  |  |  |  |  |
Trading days |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |
Consecutive days |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |
Third Share Target [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn out shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 |  |  |  |  |  |
Trading days |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |
Consecutive days |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |
New Abpro [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Converted into shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |
PIPE Investors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,367,401 |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds (in Dollars) | 2,755,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advisor receive shares |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |
Percentage of gross amount payable to sponsor raised from investors |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Standby Equity Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advance occurrence value (in Dollars) |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Convertible Promissory Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt face amount (in Dollars) | $ 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Nov. 13, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | VWAP [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.5 |  |  |
Subsequent Event [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |
Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18.00% |  |  |
Subsequent Event [Member] | Atlantic Coastal Acquisition Management II LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancelled shares |  | 966,442 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Yorkville [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share (in Dollars per share) |  |  | $ 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Underwriter [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Underwriter waived (in Dollars) |  |  |  |  |  |  |  |  | $ 4,290,000 |  |  |  |  |  |  |  |  |  |  |
Underwriter fee |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Abpro Corporation Shareholders [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of aggregate shares consideration |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of pulicly held failed to meet minimum requirement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 750,000 |  |
Common stock, par value (in Dollars per share) |  | $ 0.0001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.2 | 11.2 |  |  |  |  |
Price per unit (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.2 | 11.2 |  |  |  |  |
Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  | 39,413,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] | Subsequent Event [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  | 3,367,401 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserved shares for issuance |  | 10,586,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0001 | 0.0001 | $ 0.0001 |  |  | $ 0.0001 |
Redemption price, per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 10.68 |  |  | $ 12 | $ 12 |  |  |  |  |
Shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,499,999 | 7,499,999 | 7,499,999 |  |  |  |
Stock exercised |  |  |  |  |  |  |  |  |  |  | 2,768,301 |  |  |  |  |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10
Stock exercised value (in Dollars) |  |  |  |  |  |  |  |  |  |  |  | $ 276,471,460 | $ 29,728,990 |  |  |  |  |  |  |
Series A Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in Dollars per share) |  |  | $ 0.0001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 983,333 | 983,333 |  |  |  |  |
Shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1 |  |  |  |  |
Stock exercised |  |  |  |  |  |  |  |  |  |  |  |  |  | 330,276 | 330,276 |  |  |  |  |
Exercised value of closing (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,752,627 |  |  |  |  |
Price per share (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.36 | $ 11.36 |  |  |  |  |
Common stock share held |  |  |  |  |  |  |  |  |  |  |  |  |  | 983,333 | 983,333 |  |  |  |  |
Value of stock issued (in Dollars) |  |  |  |  |  | $ 126,122 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock exercised value (in Dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,752,627 | $ 3,752,627 |  |  |  |  |
Price per unit (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.36 | $ 11.36 |  |  |  |  |
Series A Common Stock [Member] | Third-party Investors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 983,333 |  |  |  |  |  |
Incentive Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,244,934 |  |  |  |  |  |
Incentive Shares [Member] | Celltrion [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted share issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Recycled Shares [Member] | Subsequent Event [Member] | Yorkville [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share (in Dollars per share) |  |  | $ 11.36 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investor Shares [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock |  | 1,250,000 |  | 124,352 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, per share (in Dollars per share) |  |  | 9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PubCo Shares [Member] | Series A Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in Dollars per share) |  |  | $ 0.0001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Number of additonal shares issued. + References No definition available. + Details
Name: | acab_AdditionalSharesIssued
Namespace Prefix: | acab_
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