Income Taxes (Tables)

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Component of Income Taxes

	Three months ended						Nine months ended
	September 30,						September 30,
	2017			2018			2017			2018
	(In millions)
Expected tax expense (benefit), at U.S. federal statutory income tax rate of 35% in 2017 and 21% in 2018	$	8.5		$	(4.4	)	$	34.0		$	(12.1	)
Rate differences on equity in earnings of Kronos		(2.1	)		(1.9	)		(5.0	)		(4.3	)
Nontaxable income		(.1	)		-			(.3	)		(.2	)
U.S. state income taxes and other, net		.2			.2			.2			1.2
Income tax expense (benefit)	$	6.5		$	(6.1	)	$	28.9		$	(15.4	)
Comprehensive provision for income taxes    (benefit) allocable to:
Net income (loss)	$	6.5		$	(6.1	)	$	28.9		$	(15.4	)
Other comprehensive income (loss):
Marketable securities		(2.8	)		-			(5.3	)		-
Currency translation		3.1			.3			5.7			(.6	)
Interest rate swap		.2			-			.2			-
Pension plans		.4			.3			1.1			.8
OPEB plans		(.1	)		(.1	)		(.1	)		(.1	)
Total	$	7.3		$	(5.6	)	$	30.5		$	(15.3	)