v3.10.0.1
Document And Entity Information - shares
6 Months Ended
Jun. 30, 2018
Jul. 30, 2018
Entity Information [Line Items]    
Entity Registrant Name PDL BIOPHARMA, INC.  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   145,400,381
Amendment Flag false  
Entity Central Index Key 0000882104  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Accelerated Filer  
Entity Well-known Seasoned Issuer Yes  
Document Period End Date Jun. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2