|
Valuation and Qualifying Accounts (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
|
Allowance for doubtful accounts [Member] | TransUnion Holding Company, Inc. [Member]
|
|||
| Movement in valuation allowances and reserves | |||
| Charged to Costs and Expenses | $ (1.9) | ||
| Charged to Other Accounts | 3.7 | ||
| Deductions | (0.1) | ||
| Balance at End of Year | 1.7 | ||
|
Allowance for doubtful accounts [Member] | TransUnion Corp [Member]
|
|||
| Movement in valuation allowances and reserves | |||
| Balance at Beginning of Year | 1.2 | 1.7 | 2.5 |
| Charged to Costs and Expenses | 1.3 | 1.9 | 1.5 |
| Charged to Other Accounts | (0.3) | ||
| Deductions | (0.8) | (2.1) | (2.3) |
| Balance at End of Year | 1.7 | 1.2 | 1.7 |
|
Allowance for deferred tax assets [Member] | TransUnion Holding Company, Inc. [Member]
|
|||
| Movement in valuation allowances and reserves | |||
| Balance at Beginning of Year | |||
| Charged to Costs and Expenses | 5.0 | ||
| Charged to Other Accounts | 24.8 | ||
| Deductions | (2.6) | ||
| Balance at End of Year | 27.2 | ||
|
Allowance for deferred tax assets [Member] | TransUnion Corp [Member]
|
|||
| Movement in valuation allowances and reserves | |||
| Balance at Beginning of Year | 16.9 | 12.8 | 3.0 |
| Charged to Costs and Expenses | 15.6 | 4.6 | 9.9 |
| Charged to Other Accounts | 7.4 | 0.2 | |
| Deductions | (12.7) | (0.7) | (0.1) |
| Balance at End of Year | $ 27.2 | $ 16.9 | $ 12.8 |