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Other Assets (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 TransUnion Holding Company, Inc. [Member] | Dec. 31, 2012 TransUnion Corp-Successor [Member] | Dec. 31, 2011 TransUnion Corp-Predecessor [Member]
--- | --- | --- | ---
Other assets |  |  |
Investments in affiliated companies | $ 88.6 | $ 88.6 | $ 42.7
Deferred financing fees | 34.0 |  | 23.7
Deposits | 6.3 | 6.3 | 10.7
Other | 0.9 | 0.8 | 0.7
Total other assets | $ 129.8 | $ 95.7 | $ 77.8

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