v2.4.0.6

Commitments (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended		8 Months Ended	4 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 TransUnion Holding Company, Inc. [Member]	Dec. 31, 2012 TransUnion Corp-Successor [Member]	Apr. 30, 2012 TransUnion Corp-Predecessor [Member]	Dec. 31, 2011 TransUnion Corp-Predecessor [Member]	Dec. 31, 2010 TransUnion Corp-Predecessor [Member]
Commitments (Textual) [Abstract]
Rental expense			$ 7.4	$ 3.7	$ 13.8	$ 13.0
Operating lease other than of TransUnion Corp	49.5	0
Commitments (Additional Textual) [Abstract]
Trade accounts payable	78.4	78.4	77.5		75.1
Minimum payment under licensing agreements	$ 0

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Minimum payments licensing agreements.

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Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Liabilities

-URI http://asc.fasb.org/extlink&oid=6509677



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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section A

-Paragraph 7

-Chapter 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Subparagraph (SX 210.5-02.19(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5



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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Number 13

-Paragraph 122

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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