Noncontrolling Interest in Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2019

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Net Assets of Subsidiaries

	December 31,
	2018		2019
	(In millions)
Noncontrolling interest in net assets:
Kronos Worldwide	$	221.4	$	216.6
NL Industries		62.4		65.8
CompX International		19.4		22.7
BMI		27.1		20.1
LandWell		23.3		14.9
Total	$	353.6	$	340.1

Schedule of Noncontrolling Interest in Net Income (loss) of Subsidiaries

	Years ended December 31,
	2017		2018			2019
	(In millions)
Noncontrolling interest in net income (loss) of subsidiaries:
Kronos Worldwide	$	69.3	$	39.9		$	16.9
NL Industries		19.7		(7.0	)		4.4
CompX International		1.7		2.0			2.2
BMI		3.2		1.5			2.2
LandWell		1.2		2.4			3.3
Total	$	95.1	$	38.8		$	29.0