| Component: (Network and Table) | |
|---|---|
| Network | 40902 - Disclosure - Term Loan - Principal Payments (Details) (http://www.blueprintmedicines.com/role/DisclosureTermLoanPrincipalPaymentsDetails) |
| Table | Schedule of Long-term Debt Instruments [Table] |
| Reporting Entity [Axis] | 0001597264 (http://www.sec.gov/CIK) |
| Debt Instrument [Axis] | Loan and Security Agreement |
| Term Loan | Period [Axis] |
|---|---|
2016-12-31 | |
2017 | |
2018 | |
Total |