Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Financial Instruments not Carried at Fair Value

The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2021 and 2022:

	December 31, 2021				December 31, 2022
	Carrying		Fair		Carrying		Fair
	amount		value		amount		value
	(In millions)
Cash, cash equivalents and restricted cash equivalents	$	792.9	$	792.9	$	562.0	$	562.0
Long-term debt:
Kronos Senior Notes		448.8		460.2		424.1		374.2
Valhi credit facility with Contran		172.9		172.9		121.4		121.4
LandWell bank note payable		13.5		13.5		12.9		12.9
BWC bank note payable		15.4		15.9		—		—