| Component: (Network and Table) | |
|---|---|
| Network | 2408403 - Disclosure - Capital structure (Details 2) (http://www.ptcbio.com/role/CapitalStructureDetails2) |
| Table | Class of Warrant or Right [Table] |
| Reporting Entity [Axis] | 0001070081 (http://www.sec.gov/CIK) |
| Class of Stock [Axis] | Common stock |
| Warrants | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2016-12-31 | 2015-12-31 | |||||
| Debt Instrument, Redemption, Period [Axis] | Debt Instrument, Redemption, Period [Axis] | |||||
| 2017 | 2018 | 2019 | 2017 | 2018 | 2019 | |
Warrant shares (in shares) | ||||||
Exercise price (in dollars per share) | ||||||