v2.4.0.6

Quarterly Financial Data (Unaudited) (Details) (TransUnion Holding Company, Inc. [Member], USD $) In Millions, unless otherwise specified	3 Months Ended				10 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2012
TransUnion Holding Company, Inc. [Member]
Summary of quarterly financial data
Revenue	$ 284.4	$ 291.7	$ 190.9
Operating income	43.4	61.3	36.5		141.2
Net income (loss)	(6.7)	13.5	(2.3)	(8.5)	(3.9)
Net income (loss) attributable to TransUnion Holding	$ (8.2)	$ 11.3	$ (3.5)	$ (8.5)	$ (8.8)

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