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Income Taxes (Components of Income Tax) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current expense |  |  |
Federal and other | $ 5.8 | $ 2.7 | $ 41.1
Foreign | 42.2 | 25.8 | 30.5
Total current income tax expense | 48.0 | 28.5 | 71.6
Deferred expense (benefit) |  |  |
Federal and other | 8.4 | 11.1 | (47.4)
Foreign | 0.3 | 11.6 | 2.2
Total deferred income tax expense (benefit) | 8.7 | 22.7 | (45.2)
Income tax expense | $ 56.7 | $ 51.2 | $ 26.4

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