XML 69 R44.htm IDEA: XBRL DOCUMENT
v3.25.3

Organization and Significant Accounting Policies - Useful Lives of Property, Plant and Equipment (Details) | Sep. 30, 2025
--- | ---
Buildings |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 39 years
Research equipment |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 5 years
Manufacturing equipment | Minimum |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 7 years
Manufacturing equipment | Maximum |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 10 years
Furniture |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 7 years
Computers and software | Minimum |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 3 years
Computers and software | Maximum |
Organization And Significant Accounting Policies [Line Items] |
Estimated Useful Lives | 5 years

X
- Definition Organization and significant accounting policies. + References No definition available. + Details
Name: | arwr_OrganizationAndSignificantAccountingPoliciesLineItems
Namespace Prefix: | arwr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=arwr_ResearchEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=arwr_ManufacturingEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=arwr_ComputersAndSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |