CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 24.5	$ 37.9
Other comprehensive income (loss), net of tax:
Currency translation	1.7	(37.7)
Total other comprehensive income (loss), net	4.9	(34.8)
Comprehensive income	29.4	3.1
Comprehensive income attributable to noncontrolling interest	11.0	4.2
Comprehensive income (loss) attributable to Valhi stockholders	18.4	(1.1)
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	3.4	3.0
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.2)	$ (0.1)