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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 | ||
|---|---|---|---|---|---|---|---|---|---|
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Jun. 15, 2010
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Dec. 31, 2012
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Dec. 31, 2011
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Apr. 30, 2012
TransUnion Corp-Predecessor [Member]
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Jun. 30, 2012
TransUnion Corp-Predecessor [Member]
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Mar. 31, 2012
TransUnion Corp-Predecessor [Member]
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Mar. 31, 2011
TransUnion Corp-Predecessor [Member]
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Jun. 30, 2012
TransUnion Holding Company, Inc. [Member]
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Mar. 31, 2012
TransUnion Holding Company, Inc. [Member]
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| 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 | ||||||||