Income Taxes Income Taxes - Schedule of Valuation Allowance (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
| Valuation allowance | $ 41.1 | $ 28.2 |
| Foreign | ||
| Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
| Valuation allowance | 23.5 | 23.3 |
| State | ||
| Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
| Valuation allowance | 13.8 | 4.9 |
| Federal | ||
| Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
| Valuation allowance | $ 3.8 | $ 0.0 |
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|