Annual report pursuant to Section 13 and 15(d)

Plant Closure Expenses - Narrative (Details)

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Plant Closure Expenses - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2017
USD ($)
employee
Sep. 30, 2017
manufacturing_facility
Dec. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
employee
Dec. 31, 2016
position
Restructuring Cost and Reserve [Line Items]          
Number of positions eliminated       40 6
Pre-tax expenses       $ 29.6  
Wood Flooring          
Restructuring Cost and Reserve [Line Items]          
Number of manufacturing facilities ceasing operations | manufacturing_facility   2      
Number of positions eliminated | employee 300        
Pre-tax expenses     $ 29.6    
Expected additional pre-tax cash expenses $ 2.0   $ 2.0 $ 2.0