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Intangible Assets (Details Textual) (USD $)
12 Months Ended 8 Months Ended 12 Months Ended 4 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Apr. 30, 2012
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2012
TransUnion Corp-Successor
Transunion Corp [Member]
Dec. 31, 2013
TransUnion Corp-Successor
Transunion Corp [Member]
Apr. 30, 2012
TransUnion Corp-Predecessor
Transunion Corp [Member]
Dec. 31, 2011
TransUnion Corp-Predecessor
Transunion Corp [Member]
Apr. 30, 2012
Database and credit files [Member]
Dec. 31, 2013
Database and credit files [Member]
Dec. 31, 2012
Database and credit files [Member]
Dec. 31, 2013
Database and credit files [Member]
Maximum [Member]
Dec. 31, 2013
Database and credit files [Member]
Minimum [Member]
Dec. 31, 2013
Internally developed software [Member]
Dec. 31, 2012
Internally developed software [Member]
Apr. 30, 2012
Internally developed software [Member]
TransUnion Corp-Successor
Apr. 30, 2012
Customer relationships [Member]
Dec. 31, 2013
Customer relationships [Member]
Dec. 31, 2012
Customer relationships [Member]
Dec. 31, 2013
Customer relationships [Member]
Maximum [Member]
Dec. 31, 2013
Customer relationships [Member]
Minimum [Member]
Apr. 30, 2012
Customer relationships [Member]
TransUnion Corp-Successor
Apr. 30, 2012
Trademarks, copyrights and patents [Member]
Dec. 31, 2013
Trademarks, copyrights and patents [Member]
Dec. 31, 2012
Trademarks, copyrights and patents [Member]
Apr. 30, 2012
Trademarks, copyrights and patents [Member]
TransUnion Corp-Successor
Dec. 31, 2013
Noncompete agreements [Member]
Dec. 31, 2012
Noncompete agreements [Member]
Apr. 30, 2012
Noncompete agreements [Member]
TransUnion Corp-Successor
Dec. 31, 2013
Internal Use Software [Member]
Maximum [Member]
Dec. 31, 2013
Internal Use Software [Member]
Minimum [Member]
Apr. 30, 2012
TransUnion Change in Control [Member]
Database and credit files [Member]
Apr. 30, 2012
TransUnion Change in Control [Member]
Internally developed software [Member]
Apr. 30, 2012
TransUnion Change in Control [Member]
Customer relationships [Member]
Apr. 30, 2012
TransUnion Change in Control [Member]
Trademarks, copyrights and patents [Member]
Apr. 30, 2012
TransUnion Change in Control [Member]
Noncompete agreements [Member]
Intangible Assets (Textual) [Abstract]                                                                          
Purchase accounting fair value increase adjustments                                                                 $ (705,100,000) $ (261,200,000) $ (256,100,000) $ (537,000,000) $ 3,300,000
Accumulated amortization 227,500,000 86,600,000 0     86,600,000 227,500,000       84,300,000 33,900,000     94,700,000 34,800,000 0   25,800,000 10,300,000     0   22,200,000 7,400,000 0 500,000 200,000 0              
Amortizable intangibles estimated Useful lives       40 years 3 years         15 years     15 years 12 years       20 years     20 years 10 years   40 years 40 years           7 years 3 years          
Amortization expense for intangible assets           $ 88,300,000 $ 142,800,000 $ 16,800,000 $ 46,000,000