Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Long-Term Debt

	December 31,
	2021		2022
	(In millions)
Valhi:
Contran credit facility	$	172.9	$	121.4
Subsidiary debt:
Kronos:
Senior Notes		448.8		424.1
LandWell:
Note payable to Western Alliance Business Trust		13.5		12.9
BMI:
BWC Bank loan from Western Alliance Bank		15.4		—
Other		2.4		1.1
Total subsidiary debt		480.1		438.1
Total debt		653.0		559.5
Less current maturities		3.1		1.8
Total long-term debt	$	649.9	$	557.7

Aggregate maturities of long-term debt

Years ending December 31,	Amount
	(In millions)
Gross amounts due each year:
2023	$	1.8
2024		122.1
2025		427.3
2026		.8
2027		.8
2028 and thereafter		9.1
Subtotal		561.9
Less amounts representing original issue discount and debt issuance costs		2.4
Total long-term debt	$	559.5