XML 36 R8.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Consolidated Statements of Cash Flows (Parenthetical) - shares | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
--- | --- | --- | ---
Common stock, shares issued | 59,544,677 | 54,656,936 |
Roche Madison Inc |  |  |
Common stock, shares issued |  |  | 239,894
Galloway Limited |  |  |
Common stock, shares issued |  | 131,579 |
Novartis |  |  |
Common stock, shares issued | 3,321,383 |  |

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=arwr_RocheMadisonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | arwr_ServiceAgreementSettlementAxis=arwr_GallowayLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | arwr_AssetAcquisitionAxis=arwr_NovartisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |