Income Taxes (Tables)

3 Months Ended

Mar. 31, 2022

Income Tax Disclosure [Abstract]

Component of Income Taxes

	Three months ended
	March 31,
	2021		2022
	(In millions)
Expected tax expense, at U.S. federal statutory income tax rate of 21%	$	3.4	$	4.6
Rate differences on equity in earnings of Kronos, net of dividends		(1.0)		(1.9)
Nontaxable income		(.6)		—
Nontaxable expenses		.5		—
U.S. state income taxes and other, net		.2		—
Income tax expense	$	2.5	$	2.7
Comprehensive provision for income taxes allocable to:
Net income	$	2.5	$	2.7
Additional paid-in capital		—		.1
Other comprehensive income:
Currency translation		.1		.4
Pension plans		.3		.2
Total	$	2.9	$	3.4