v2.4.0.6

Debt (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 8 Months Ended | 4 Months Ended | 12 Months Ended | 4 Months Ended | 12 Months Ended | 4 Months Ended | 12 Months Ended
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Dec. 31, 2012 TransUnion Holding Company, Inc. [Member] | Dec. 31, 2012 TransUnion Holding Company, Inc. [Member] 9.625% notes [Member] | Dec. 31, 2012 TransUnion Holding Company, Inc. [Member] Senior secured revolving line of credit [Member] | Dec. 31, 2012 TransUnion Holding Company, Inc. [Member] Other debt [Member] | Dec. 31, 2012 TransUnion Corp-Successor [Member] | Dec. 31, 2012 TransUnion Corp-Successor [Member] Senior secured revolving line of credit [Member] | Dec. 31, 2012 TransUnion Corp-Successor [Member] Other debt [Member] | Apr. 30, 2012 TransUnion Corp-Predecessor [Member] | Dec. 31, 2011 TransUnion Corp-Predecessor [Member] | Dec. 31, 2010 TransUnion Corp-Predecessor [Member] | Dec. 31, 2011 TransUnion Corp-Predecessor [Member] Senior secured term loan [Member] | Apr. 30, 2012 TransUnion Corp-Predecessor [Member] Senior secured revolving line of credit [Member] | Dec. 31, 2011 TransUnion Corp-Predecessor [Member] Senior secured revolving line of credit [Member] | Dec. 31, 2010 TransUnion Corp-Predecessor [Member] Senior secured revolving line of credit [Member] | Apr. 30, 2012 TransUnion Corp-Predecessor [Member] Other debt [Member] | Dec. 31, 2011 TransUnion Corp-Predecessor [Member] Other debt [Member] | Dec. 31, 2010 TransUnion Corp-Predecessor [Member] Other debt [Member]
Loan fees included in other interest and expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | $ (59.3) | $ (11.0) | $ 59.3 |  |  |  |  |  |
Unused revolving line of credit fees |  |  | 0.7 |  |  | 0.7 |  |  |  |  |  | 0.3 | 1.0 | 0.5 |  |  |
Amortized deferred financing fees |  |  |  |  |  |  |  |  |  |  |  | 0.1 | 0.3 | 1.0 |  |  | 0.6
Other loan fees |  | 1.0 |  | 0.2 |  |  | 0.2 |  |  |  |  |  |  |  | 2.7 | 0.3 | 19.5
Total loan fees | $ 1.9 |  | $ 0.7 | $ 0.2 | $ 0.9 | $ 0.7 | $ 0.2 | $ 3.1 | $ 60.9 | $ 21.6 |  | $ 0.4 | $ 1.3 | $ 1.5 | $ 2.7 | $ 0.3 | $ 20.1

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- Definition The amortization of financing costs included in other income and expense. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition The total expense incurred during the period for loan fees, unused line fees, costs to extinguish debt, and amortization of financing fees relating to long term debt that are not included in interest expense. + References No definition available. + Details
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- Definition Other fees and expenses incurred during the period related to long-term debt. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition Unused revolving line of credit fees. + References No definition available. + Details
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X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20, 21 -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 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
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