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Restructuring and Divestiture Costs - Building Products - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net $ 23.3 $ 19.8 $ 20.8
Other long-lived asset impairment charges 3.0 13.5 17.8
Building Products [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net 10.2 7.3 31.8
Severance cost 5.1    
Divestiture costs 2.3    
2013 Building Products Restructuring Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net 0.5    
Severance cost 0.1 4.5  
Other long-lived asset impairment charges   1.0  
Warranty costs   1.8  
2013 Building Products Restructuring Plan [Member] | Building Products [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net   7.3 6.8
Severance cost   4.5 $ 3.2
Divestiture costs   $ 1.8  
2015 Building Products Restructuring Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net 9.7    
Severance cost 5.0    
Divestiture costs 2.3    
2015 Building Products Restructuring Plan [Member] | Building Products [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and divestiture costs, net 10.2    
Severance cost 5.1    
Other long-lived asset impairment charges 2.8    
Divestiture costs $ 2.3