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Income Taxes - Geographic Components of Earnings Before Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Income Tax Disclosure [Abstract]      
United States $ 54.7 $ 102.1 $ 132.4
Foreign 55.8 62.5 49.1
Earnings before income taxes $ 110.5 $ 164.6 $ 181.5