Noncontrolling Interest in Subsidiaries (Tables)

3 Months Ended

Mar. 31, 2023

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Net Assets of Subsidiaries

	December 31,		March 31,
	2022		2023
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	239.3	$	230.6
NL Industries		79.0		77.0
CompX International		20.6		21.0
BMI		6.9		8.6
LandWell		2.4		5.2
Total	$	348.2	$	342.4

Schedule of Noncontrolling Interest in Net Income of Subsidiaries