CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 89.0	$ 78.2	$ 301.0
Other comprehensive income (loss), net of tax:
Currency translation	12.5	(1.8)	(29.4)
Total other comprehensive income (loss), net	1.4	(19.9)	(37.1)
Comprehensive income	90.4	58.3	263.9
Comprehensive income attributable to noncontrolling interest	33.9	23.5	29.0
Comprehensive income attributable to Valhi stockholders	56.5	34.8	234.9
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	(10.4)	(17.3)	(6.8)
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.7)	$ (0.8)	$ (0.9)