Goodwill (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011 TransUnion Corp-Predecessor [Member]	Dec. 31, 2010 TransUnion Corp-Predecessor [Member]	Dec. 31, 2012 TransUnion Corp-Successor [Member] TransUnion Holding Company, Inc. [Member]
Goodwill (Textual) [Abstract]
Goodwill impairment	$ 0	$ 0	$ 0
Accumulated goodwill impairment losses			$ 0

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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+ Details