Noncontrolling interest in subsidiaries (Tables)

12 Months Ended

Dec. 31, 2023

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Net Assets of Subsidiaries

	December 31,
	2022		2023
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	239.3	$	209.0
NL Industries		79.0		76.9
CompX International		20.6		22.0
BMI		6.9		11.0
LandWell		2.4		6.8
Total	$	348.2	$	325.7

Schedule of Noncontrolling interest in net income (loss) of subsidiaries

	December 31,
	2022		2023
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	239.3	$	209.0
NL Industries		79.0		76.9
CompX International		20.6		22.0
BMI		6.9		11.0
LandWell		2.4		6.8
Total	$	348.2	$	325.7

	Years ended December 31,
	2021		2022		2023
	(In millions)
Noncontrolling interest in net income (loss) of subsidiaries:
Kronos Worldwide	$	22.0	$	20.0	$	(9.5)
NL Industries		8.7		5.8		(.4)
CompX International		2.2		2.6		2.9
BMI		14.7		2.8		8.2
LandWell		22.9		14.7		13.8
Total	$	70.5	$	45.9	$	15.0