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Earnings Per Share - Computations of Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]    
Net Income $ 77.4 $ 61.0
Less: Noncontrolling interest 0.0 0.0
Net income attributable to Fortune Brands $ 77.4 $ 61.0
Basic earnings per common share $ 0.50 $ 0.39
Diluted earnings per common share $ 0.50 $ 0.38
Basic average shares outstanding 153.3 155.7
Stock-based awards 2.9 3.8
Diluted average shares outstanding 156.2 159.5
Antidilutive stock-based awards excluded from weighted-average number of shares outstanding for diluted earnings per share 0.6 0.9