v2.4.0.6

Operating Segments (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended			10 Months Ended		12 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2012 Segment	Dec. 31, 2012 TransUnion Holding Company, Inc. [Member]	Sep. 30, 2012 TransUnion Holding Company, Inc. [Member]	Jun. 30, 2012 TransUnion Holding Company, Inc. [Member]	Dec. 31, 2012 TransUnion Holding Company, Inc. [Member]	Dec. 31, 2012 TransUnion Holding Company Inc Stand Alone [Member]	Dec. 31, 2012 TransUnion Holding Company Inc Stand Alone [Member]	Dec. 31, 2012 TransUnion Corp-Successor [Member]	Dec. 31, 2012 TransUnion Corp-Successor [Member] Segment	Dec. 31, 2012 TransUnion Corp-Successor [Member] TransUnion Holding Company, Inc. [Member]
Operating Segments (Textual) [Abstract]
Number of operating segments	3								3
Number of corporate unit									1
Non-operating expense					$ (138.5)	$ 68.6		$ (69.9)
Revenue					767.0	0		767.0
Operating income		43.4	61.3	36.5	141.2	0.9		142.1
Capital expenditures							0	48.8
Depreciation and amortization					115.0		0	115.0
Property, plant and equipment, net		121.2			121.2	0	0	121.2	121.2	121.2
Long-lived assets other than the long-lived						0	0
Equity Method Investments						$ 0	$ 0
Number of market groups in the international segment									2

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Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets.

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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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