Investment in Kronos Worldwide, Inc. (Tables)

12 Months Ended

Dec. 31, 2021

Equity Method Investments And Joint Ventures [Abstract]

Changes in Carrying Value of Investment

	Years ended December 31,
	2019		2020		2021
	(In millions)
Balance at the beginning of the period	$	255.5	$	248.4	$	242.4
Equity in earnings of Kronos		26.5		19.4		34.3
Dividends received from Kronos		(25.4)		(25.4)		(25.4)
Equity in Kronos' other comprehensive income (loss):
Currency translation		(.5)		4.1		(2.1)
Defined benefit pension plans		(6.7)		(3.7)		15.6
Other postretirement benefit plans		(.1)		(.1)		—
Other		(.9)		(.3)		—
Balance at the end of the year	$	248.4	$	242.4	$	264.8

Selected Financial Information of Kronos Balance Sheet

	December 31,
	2020		2021
	(In millions)
Current assets	$	1,218.3	$	1,258.0
Property and equipment, net		524.6		503.4
Investment in TiO2 joint venture		103.3		101.9
Other noncurrent assets		190.5		149.5
Total assets	$	2,036.7	$	2,012.8
Current liabilities	$	260.2	$	288.8
Long-term debt		486.7		449.8
Accrued pension costs		372.6		287.4
Other noncurrent liabilities		120.7		116.6
Stockholders’ equity		796.5		870.2
Total liabilities and stockholders’ equity	$	2,036.7	$	2,012.8

Selected Financial Information of Kronos Income Statement

	Years ended December 31,
	2019		2020		2021
	(In millions)
Net sales	$	1,731.1	$	1,638.8	$	1,939.4
Cost of sales		1,344.9		1,287.6		1,493.2
Income from operations		145.8		116.2		187.1
Income tax expense		34.0		16.1		40.5
Net income		87.1		63.9		112.9