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Income Taxes - Narrative (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) subsidiary | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Valuation Allowance [Line Items] |  |  |
U.S. federal statutory corporate tax rate | 21.00% | 21.00% |
Provision for income taxes | $ 83.8 | $ 53.3 | $ 47.6
Effective tax rate | 22.60% | 23.40% | 23.20%
Number of foreign subsidiaries | subsidiary | 2 |  |
Deferred tax liabilities, net | $ 13.1 |  |
Unrecognized tax benefits that would affect the effective tax rate if recognized | 1.7 | $ 2.1 | $ 1.4
Interest and penalties related to uncertain tax positions | 0.3 | $ 0.3 | $ 0.2
State |  |  |
Valuation Allowance [Line Items] |  |  |
NOL carryforwards | 564.8 |  |
Foreign |  |  |
Valuation Allowance [Line Items] |  |  |
NOL carryforwards | $ 85.1 |  |

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