Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Jan. 31, 2013
Mar. 13, 2013
Jul. 31, 2012
Document and Entity Information      
Entity Registrant Name Pandora Media, Inc.    
Entity Central Index Key 0001230276    
Document Type 10-K    
Document Period End Date Jan. 31, 2013    
Amendment Flag false    
Current Fiscal Year End Date --01-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 725
Entity Common Stock, Shares Outstanding   172,896,461  
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY