v2.4.0.6

Quarterly Financial Data (Unaudited) (Details Textual) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 12 Months Ended | 1 Months Ended | 2 Months Ended | 3 Months Ended | 2 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 15, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Apr. 30, 2012 TransUnion Corp-Predecessor [Member] | Jun. 30, 2012 TransUnion Corp-Predecessor [Member] | Mar. 31, 2012 TransUnion Corp-Predecessor [Member] | Mar. 31, 2011 TransUnion Corp-Predecessor [Member] | Jun. 30, 2012 TransUnion Holding Company, Inc. [Member] | Mar. 31, 2012 TransUnion Holding Company, Inc. [Member]
Quarterly Financial Data (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Acquisition fees |  | $ 0.5 | $ 2.4 | $ 18.3 |  | $ 2.6 |  | $ 8.2 | $ 7.0
Accelerated stock-based compensation and related expense | 20.7 |  |  | 90.0 | 0.3 |  |  |  |
Loss on early extinguishment of debt |  |  |  |  |  |  | 59.3 |  |
Deferred financing fees |  |  |  |  |  |  | 49.8 |  |
Prepayment penalty charges |  |  |  |  |  |  | $ 9.5 |  |

X
- Definition Amount of unamortized financing fees expensed during the period due to extinguishment of debt. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition Prepayment penalty charges. + References No definition available. + Details
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- Details
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X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition Current period income tax expense or benefit pertaining to a gain (loss) on an extinguishment of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20 -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 + Details
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X
- Definition Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. + References No definition available. + Details
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