XML 19 R67.htm IDEA: XBRL DOCUMENT v2.4.0.8
Noncontrolling Interest in Subsidiaries - Noncontrolling Interest in Subsidiaries (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Noncontrolling interest in net assets:    
Noncontrolling interest in subsidiaries $ 335.9 $ 358.1
Kronos Worldwide, Inc.
    
Noncontrolling interest in net assets:    
Noncontrolling interest in subsidiaries 239.1 267.0
NL
    
Noncontrolling interest in net assets:    
Noncontrolling interest in subsidiaries 83.3 77.8
CompX
    
Noncontrolling interest in net assets:    
Noncontrolling interest in subsidiaries $ 13.5 $ 13.3