Stockholders' Equity - Schedule of Development Subsidiaries and Their Product Candidates (Details) - Subsidiaries [Member] |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Cullinan M I C A Corp [Member] | ||
| Common Stock And Noncontrolling Interest In Subsidiaries [Line Items] | ||
| Subsidiary, Ownership Percentage | 99.00% | 95.00% |
| Cullinan Florentine Corp [Member] | ||
| Common Stock And Noncontrolling Interest In Subsidiaries [Line Items] | ||
| Subsidiary, Ownership Percentage | 97.00% | 96.00% |
| Cullinan Amber Corp [Member] | ||
| Common Stock And Noncontrolling Interest In Subsidiaries [Line Items] | ||
| Subsidiary, Ownership Percentage | 94.00% | 94.00% |