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v3.25.1

Organization of the Company and Basis of Presentation - Subsequent Events (Details) |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Mar. 21, 2025 USD ($) $ / shares shares | Mar. 10, 2025 GBP (£) | Feb. 26, 2025 shares | Feb. 11, 2025 $ / shares shares | Feb. 06, 2025 | Feb. 05, 2025 USD ($) | Feb. 04, 2025 USD ($) $ / shares | Jan. 31, 2025 USD ($) | Jan. 29, 2025 | Jan. 02, 2025 USD ($) $ / shares shares | Dec. 18, 2023 | Dec. 31, 2024 $ / shares | Dec. 31, 2023 $ / shares
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001
Reverse stock split ratio |  |  |  |  |  |  |  |  |  |  | 0.067 |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in stockholders' equity due to deconsolidation of subsidiary |  |  |  |  |  |  |  | $ 5,600,000 |  |  |  |  |
Subsequent event | Cyclacel Limited, United Kingdom | Assets Of Cyclacel Limited |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Asset acquisition consideration transferred | £ |  | £ 250,000 |  |  |  |  |  |  |  |  |  |  |
Rombotis Settlement Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement payment |  |  |  |  |  |  |  |  |  | $ 279,415.50 |  |  |
Future one time settlement payment |  |  |  |  |  |  |  |  |  | 279,415.50 |  |  |
Mc Barron Settlement Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement payment |  |  |  |  |  |  |  |  |  | 165,164.50 |  |  |
Future one time settlement payment |  |  |  |  |  |  |  |  |  | $ 165,164.50 |  |  |
January 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Share issue price per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 1.00 |  |  |
Gross proceeds from convertible preferred stock |  |  |  |  |  |  |  |  |  | $ 3,100,000 |  |  |
February 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding common stock |  |  |  | 70.00% |  |  |  |  |  |  |  |  |
February 2025 Securities Purchase Agreement | Subsequent event | Helena Special Opportunities 1 Ltd |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price |  |  |  |  |  | $ 25,000,000 |  |  |  |  |  |  |
Minimum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split ratio |  |  |  |  | 0.25 |  |  |  |  |  |  |  |
Maximum | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split ratio |  |  |  |  | 0.0625 |  |  |  |  |  |  |  |
6% Convertible Exchangeable Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate (in percent) |  |  |  |  |  |  |  |  |  |  |  | 6.00% | 6.00%
Share issue price per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 10.00 |
6% Convertible Exchangeable Preferred Stock | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate (in percent) |  |  |  |  |  |  |  |  | 6.00% |  |  |  |
Series C Preferred Stock | January 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |
Series D Preferred Stock | January 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |
Common Stock | February 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued on conversion | shares |  |  | 191,978,820 |  |  |  |  |  |  |  |  |  |
Common Stock | Private Placement | Subsequent event | David Lazar |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock value agreed to be issued |  |  |  |  |  |  | $ 8,000,000 |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |
Share purchase agreement increment exercise lot one value |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Share purchase agreement increment exercise lot two value |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |
Series C Convertible Preferred Stock | February 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  | $ 0.0001 |  |  |  |  |  |  |  |  |
Number of shares issued on conversion | shares |  |  | 2,650,000 |  |  |  |  |  |  |  |  |  |
Series D Convertible Preferred Stock | February 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  | 2,100,000 |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  | $ 0.0001 |  |  |  |  |  |  |  |  |
Number of shares converted | shares |  |  | 1,745,262 |  |  |  |  |  |  |  |  |  |
Series C And D Convertible Preferred Stock | February 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  | 1,745,262 |  |  |  |  |  |  |  |  |
Number of shares converted | shares |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |
Series E Convertible Preferred Stock | March 2025 Securities Purchase Agreement | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent events |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Share issue price per share | $ / shares | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from convertible preferred stock | $ 1,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |

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