Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Allowance for doubtful accounts [Member] | |||
Movement in valuation allowances and reserves | |||
Balance at Beginning of Year | $ 2.4 | $ 0.7 | $ 1.7 |
Charged to Costs and Expenses | 3.2 | 3.2 | 0.8 |
Charged to Other Accounts | 0.0 | 0.0 | 0.0 |
Deductions | (1.4) | (1.5) | (1.8) |
Balance at End of Year | 4.2 | 2.4 | 0.7 |
Allowance for deferred tax assets [Member] | |||
Movement in valuation allowances and reserves | |||
Balance at Beginning of Year | 42.1 | 25.9 | 27.2 |
Charged to Costs and Expenses | 5.3 | 19.5 | 4.8 |
Charged to Other Accounts | 0.0 | 0.0 | 0.0 |
Deductions | (0.7) | (3.3) | (6.1) |
Balance at End of Year | 46.7 | 42.1 | 25.9 |
TransUnion Parent [Member] | |||
Valuation and Qualifying Accounts Disclosure [Line Items] | |||
Proceeds from Dividends Received | $ 45.1 | $ 90.3 | $ 94.2 |