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Component: (Network and Table)
Network
140 - Disclosure - Summary of Significant Accounting Policies - Schedule of Intangible Assets (Detail)
(http://www.seattlegenetics.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfIntangibleAssets)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001060736 (http://www.sec.gov/CIK)
Goodwill and Intangible Assets Disclosure [Abstract]Period [Axis]
2016-12-31
2015-12-31
Goodwill and Intangible Assets Disclosure [Abstract]
 
 
Intangible assets
5,650,000  
5,650,000  
Less: accumulated amortization
(4,115,000) 
(3,343,000) 
Total
1,535,000  
 
2,307,000