Long-Term Debt - Kronos Senior Secured Notes - Additional Information (Detail) - Kronos Worldwide, Inc. - 3.75% Senior Secured Notes due September 15, 2025 - Kronos International, Inc € in Millions, $ in Millions		12 Months Ended
	Sep. 13, 2017 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 13, 2017 EUR (€)	Sep. 13, 2017 USD ($)
Debt Instrument [Line Items]
Debt instrument interest rate				3.75%	3.75%
Debt instrument maturity date	Sep. 15, 2025
Debt instrument principal amount				€ 400	$ 477.6
Unamortized debt issuance costs		$ 2.4	$ 3.5
Debt instrument, payment terms		bear interest at 3.75% per annum,
Frequency of debt instrument payment		semi-annually
Debt Instrument, date of first required semi-annual payment	Mar. 15, 2018
Debt instrument redemption price percent if experiences certain specified change of control events	101.00%
Debt instrument, redemption, description		have a maturity date of September 15, 2025. Kronos may redeem the Senior Notes at 100.938% of the principal amount, declining to 100% on or after September 15, 2023. If Kronos experiences certain specified change of control events, it would be required to make an offer to purchase the Senior Notes at 101% of the principal amount. Kronos would also be required to make an offer to purchase a specified portion of the Senior Notes at par value in the event that it generates a certain amount of net proceeds from the sale of assets outside the ordinary course of business, and such net proceeds are not otherwise used for specified purposes within a specified time period
Maximum amount of other indebtedness default before triggering customary default provisions	$ 50.0
Collateral Pledged | Direct Domestic Subsidiary of KII and Guarantors
Debt Instrument [Line Items]
Parent company ownership interest				100.00%	100.00%
Collateral Pledged | Foreign Subsidiary Directly Owned by KII or any Guarantor
Debt Instrument [Line Items]
Parent company ownership interest				65.00%	65.00%
Non-voting Common Stock | Collateral Pledged | Foreign Subsidiary Directly Owned by KII or any Guarantor
Debt Instrument [Line Items]
Parent company ownership interest				100.00%	100.00%
On or After September 15, 2020
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	100.938%
On or After September 15, 2023
Debt Instrument [Line Items]
Debt instrument, redemption price percentage	100.00%