XML 67 R57.htm IDEA: XBRL DOCUMENT v3.5.0.2
Related Party Transactions - Additional Information (Detail) - Unsecured Revolving Demand Promissory Note - Valhi Inc - USD ($)
Sep. 30, 2016
Aug. 05, 2016
Dec. 31, 2015
Nov. 30, 2010
Related Party Transaction [Line Items]        
Maximum lending capacity   $ 60,000,000   $ 100,000,000
Amended unsecured revolving credit loan $ 0   $ 0