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Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current tax expense (benefit): |  |  |
Federal | $ 17.8 | $ 12.0 | $ 7.0
Foreign | (0.1) | 0.8 | 0.6
State and local | 5.7 | 2.9 | 2.0
Total current tax expense | 23.4 | 15.7 | 9.6
Deferred tax expense (benefit): |  |  |
Federal | 0.6 | (15.7) | 8.4
Foreign | (6.5) | 0.8 | (0.7)
State and local | 0.4 | (0.3) | 0.1
Total deferred tax (benefit) expense | (5.5) | (15.2) | 7.8
Total income tax expense | $ 17.9 | $ 0.5 | $ 17.4

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