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Income Taxes - Components of Income Tax Expense (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Current:      
Federal $ 13.8 $ 12.5 $ 51.2
State and local 2.3 2.0 0.9
Foreign 22.9 26.6 21.0
Total Current Income Tax 39.0 41.1 73.1
Deferred:      
Federal (3.0) 4.2 (8.1)
State and local (0.5) 0.3 0.7
Foreign 2.7 1.0 0.6
Total Deferred Income Tax (0.8) 5.5 (6.8)
Total $ 38.2 $ 46.6 $ 66.3