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Net Income per Share - Additional Information (Detail) - shares
Oct. 01, 2018
Sep. 30, 2018
Dec. 31, 2017
Class Of Stock [Line Items]      
Common stock, shares issued (in shares)   29,167,951 29,058,117
Common stock, shares outstanding (in shares)   29,167,951 29,058,117
Subsequent Event [Member]      
Class Of Stock [Line Items]      
Common stock, shares issued (in shares) 64,400,000    
Common stock, shares outstanding (in shares) 64,400,000    
Subsequent Event [Member] | Fortive [Member] | Common Stock [Member]      
Class Of Stock [Line Items]      
Stock issued 35,000,000