v2.4.0.6

Related-Party Transactions (Details) (USD $)	12 Months Ended					8 Months Ended	4 Months Ended	12 Months Ended		8 Months Ended	4 Months Ended	12 Months Ended							12 Months Ended			12 Months Ended			1 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 TransUnion Corp-Successor [Member]	Dec. 31, 2011 TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 RFC Loan [Member] TransUnion Corp [Member]	Nov. 04, 2011 Series A Preferred Stock [Member]	Dec. 31, 2012 Neal Gerber and Eisenberg LLP [Member] TransUnion Corp-Successor [Member]	Apr. 30, 2012 Neal Gerber and Eisenberg LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2011 Neal Gerber and Eisenberg LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2010 Neal Gerber and Eisenberg LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 Latham and Watkins LLP [Member] TransUnion Corp-Successor [Member]	Apr. 30, 2012 Latham and Watkins LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2011 Latham and Watkins LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2010 Latham and Watkins LLP [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 Pritzker Family US Situs Trusts [Member]	Dec. 31, 2012 Advent International Corporation [Member]	Dec. 31, 2012 Affiliates of Advent [Member] TransUnion Holding Company, Inc. [Member]	Dec. 31, 2012 Affiliates of Goldman Sachs & Co [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 Affiliates of Goldman Sachs & Co [Member] TransUnion Holding Company, Inc. [Member]	Dec. 31, 2012 Goldman Sachs & Co [Member]	Dec. 31, 2010 Madison Dearborn Partners LLC [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2010 Pritzker Organization LLC [Member] TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 Pritzker family business interests [Member]	Apr. 08, 2011 QED Fund I LP [Member]	May 03, 2011 Matthew A. Carey [Member]	Aug. 31, 2012 Executive Vice President [Member]	Dec. 21, 2012 Executive Vice President [Member]	Aug. 27, 2012 Executive Vice President [Member]	Dec. 31, 2012 Chief Executive Officer [Member]
Related Party Transactions (Textual) [Abstract]
Advisory fee															$ 250,000				$ 250,000
Accrued fees related to consulting agreement															125,000				125,000
Other fees																200,000	1,400,000	11,900,000		13,000,000	2,600,000
Legal Services						500,000	100,000	1,300,000	900,000	400,000	3,500,000	4,400,000	3,900,000
Beneficially owned excess														5.00%
Other liabilities																						3,200,000
Common stock, shares issued		100,000,000	29,800,000																				30,775	22,500		225,563		199,237
Purchase price of common shares																							$ 24.37	$ 24.37		$ 6.65		$ 6.65
Percentage of holding as limited partner																							98.00%
Aggregate purchase of common stock																									69,625
Purchase price of aggregate common stock																											$ 10.07
Share purchased, Preferred Stock		0	0		318,471
Purchase price of series A preferred stock					$ 3.14
Borrowed				$ 16,700,000
Related Party Transactions (Additional Textual) [Abstract]
Annual increase in advisor fee to GSC & Advent	5.00%

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Percentage of common shares beneficially owned by related party.

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Percentage of holding as limited partner.

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Stock repurchased during period share price.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, collateralized financings, and capital lease obligations.

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Amount of cash paid to acquire the entity.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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