FAIR VALUE MEASUREMENT (FY) (Details) - USD ($) |
Mar. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|---|
| Current Liabilites [Abstract] | |||
| Derivative liability | $ 0 | $ 17,282,500 | $ 14,905,300 |
| Liabilities [Abstract] | |||
| Derivative Liability | 0 | 1,120,300 | 0 |
| Level 1 [Member] | |||
| Current Liabilites [Abstract] | |||
| Derivative liability | |||
| Liabilities [Abstract] | |||
| Derivative Liability | |||
| Level 2 [Member] | |||
| Current Liabilites [Abstract] | |||
| Derivative liability | |||
| Liabilities [Abstract] | |||
| Derivative Liability | |||
| Level 3 [Member] | |||
| Current Liabilites [Abstract] | |||
| Derivative liability | 0 | 17,282,500 | |
| Liabilities [Abstract] | |||
| Derivative Liability | $ 0 | $ 1,120,300 | $ 14,905,300 |