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Business Segment Information - Holding Percentage of Subsidiaries (Detail) | Sep. 30, 2015
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Chemicals | Kronos Worldwide, Inc. |
Segment Reporting Information [Line Items] |
Controlling interest in subsidiary | 80.00%
Component Products | CompX |
Segment Reporting Information [Line Items] |
Controlling interest in subsidiary | 87.00%
Waste Management | WCS |
Segment Reporting Information [Line Items] |
Controlling interest in subsidiary | 100.00%
Real Estate Management And Development | BMI |
Segment Reporting Information [Line Items] |
Controlling interest in subsidiary | 63.00%
Real Estate Management And Development | LandWell | Aggregate General And Limited Interests |
Segment Reporting Information [Line Items] |
Controlling interest in subsidiary | 77.00%

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