v2.4.0.6
Document and Entity Information (USD $)
 12 Months Ended
Dec. 31, 2012
Jan. 31, 2013
Jun. 30, 2012
Entity Registrant Name TRANSUNION CORP.    
Entity Central Index Key 0001513514    
Document Type 10-K    
Document Period End Date Dec. 31, 2012    
Amendment Flag false    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers Yes    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   100  
TransUnion Holding Company, Inc.
      
Entity Registrant Name TransUnion Holding Company, Inc.    
Entity Central Index Key 0001552033    
Document Type 10-K    
Document Period End Date Dec. 31, 2012    
Amendment Flag false    
Document Fiscal Year Focus 2012    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers Yes    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   109,807,128