|
Income Taxes - Narrative (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Dec. 31, 2014
|
|
| Income Tax Disclosure [Abstract] | |||
| Effective income tax rate (percent) | 38.40% | 38.20% | |
| Gross unrecognized tax benefit | $ 3.2 | $ 3.4 | |
| Expected change in unrecognized tax benefits | 0.1 | ||
| Accrued interest on income taxes | 4.0 | 3.9 | |
| Accrued penalties on income taxes | $ 0.1 | $ 0.1 | |