CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 54.5	$ 19.4	$ 109.3	$ 53.1
Other comprehensive income (loss), net of tax:
Currency translation	(7.1)	9.2	(3.8)	(12.2)
Total other comprehensive income (loss), net	(3.9)	12.3	5.9	(3.3)
Comprehensive income	50.6	31.7	115.2	49.8
Comprehensive income attributable to noncontrolling interest	14.5	7.1	35.6	21.2
Comprehensive income attributable to Valhi stockholders	36.1	24.6	79.6	28.6
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	3.4	$ 3.1	10.2	9.1
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.2)		$ (0.5)	$ (0.2)