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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Effective income tax rate | 31.70% | 9.10% | 27.70% | 1.80% |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 35.00% |  |
Tax credit carryforward |  |  |  |  | $ 21.8
Liability for uncertain tax positions from continuing operations | $ 0.9 |  | $ 0.9 |  | 1.3
Liability for uncertain tax positions from discontinued operations | 1.1 |  | 1.1 |  | 1.1
Liability for uncertain tax positions | 2.0 |  | 2.0 |  | 2.4
Unrecognized tax positions to be settled in the next 12 months | $ 0.5 |  | $ 0.5 |  |
Foreign Tax Authority |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Tax credit carryforward expiration period |  |  | 10 years |  |
Tax credit carryforward |  |  |  |  | $ 12.7

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