XML 53 R42.htm IDEA: XBRL DOCUMENT v3.10.0.1
Balance Sheet Information - Supplemental Information on Balance Sheets (Parenthetical) (Detail) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]    
Inventories [1] $ 684.3 $ 580.8
Fiberon [Member]    
Condensed Financial Statements, Captions [Line Items]    
Inventories $ 56.0  
[1] Includes $56.0 million in inventory related to Fiberon acquisition.