| Component: (Network and Table) | |
|---|---|
| Network | 2403402 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) (http://www.acceleronpharma.com/role/PropertyAndEquipmentNetScheduleOfPropertyAndEquipmentNetDetails) |
| Table | Property, Plant and Equipment [Table] |
| Reporting Entity [Axis] | 0001280600 (http://www.sec.gov/CIK) |
| Property and equipment, net | Period [Axis] | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2016-12-31 | 2015-12-31 | |||||||||||
| Property, Plant and Equipment, Type [Axis] | Property, Plant and Equipment, Type [Axis] | |||||||||||
| Computer Equipment and Software | Office Equipment | Laboratory Equipment | Leasehold Improvements | Construction in Progress | Property, Plant and Equipment, Type [Domain] | Computer Equipment and Software | Office Equipment | Laboratory Equipment | Leasehold Improvements | Construction in Progress | Property, Plant and Equipment, Type [Domain] | |
Total property and equipment | ||||||||||||
Accumulated depreciation and amortization | ( | ( | ||||||||||
Property and equipment, net | 5,201,000 | 3,106,000 | ||||||||||