Other Income, Net - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
Apr. 30, 2016	Mar. 31, 2016
Disclosure Other Income Net Additional Information Detail [Line Items]
Income received from settlement of business interruption insurance claim		$ 2.0
Kronos Worldwide, Inc. \| Other Income \| Insurance Claim Arising In 2014
Disclosure Other Income Net Additional Information Detail [Line Items]
Income received from settlement of business interruption insurance claim	$ 1.4	$ 2.0

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64839914&loc=d3e16285-107787

Name:	us-gaap_GainOnBusinessInterruptionInsuranceRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration