| Component: (Network and Table) | |
|---|---|
| Network | 144 - Disclosure - Property and Equipment, Net (Detail) (http://www.ariad.com/taxonomy/role/DisclosurePropertyAndEquipmentNet) |
| Table | Property, Plant and Equipment [Table] |
| Reporting Entity [Axis] | 0000884731 (http://www.sec.gov/CIK) |
| Legal Entity [Axis] | Entity [Domain] |
| Property, Plant and Equipment [Line Items] | Period [Axis] | |||||||
|---|---|---|---|---|---|---|---|---|
2015-12-31 | 2014-12-31 | |||||||
| Property, Plant and Equipment, Type [Axis] | Property, Plant and Equipment, Type [Axis] | |||||||
| Leasehold improvements | Construction in progress | Equipment and furniture | Property, Plant and Equipment, Type [Domain] | Leasehold improvements | Construction in progress | Equipment and furniture | Property, Plant and Equipment, Type [Domain] | |
Property, Plant and Equipment, Gross | ||||||||
Less accumulated depreciation and amortization | ( | ( | ||||||
Property plant and equipment, net | 254,082,000 | 203,027,000 | ||||||