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Income Taxes - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) subsidiary | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Valuation Allowance [Line Items] |  |  |  |
Provisional tax benefit recorded related to the Tax Act | $ 0.0 | $ 0.6 | $ 73.0 |
U.S. federal statutory corporate tax rate | 21.00% | 21.00% | 35.00% |
Provision for income taxes | $ 53.3 | $ 47.6 | $ 5.6 |
Effective tax rate | 23.40% | 23.20% | 2.50% |
Number of foreign subsidiaries | subsidiary | 2 |  |  |
Deferred tax liabilities, net | $ 21.9 |  |  |
Unrecognized tax benefits | 2.4 | $ 1.6 | $ 1.2 | $ 0.0
Unrecognized tax benefits that would affect the effective tax rate if recognized | 2.1 | 1.4 | 1.0 |
Interest and penalties related to uncertain tax positions | 0.3 | $ 0.2 | $ 0.2 |
State |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
NOL carryforwards | 620.1 |  |  |
Foreign |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
NOL carryforwards | $ 113.2 |  |  |

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