CONDENSED CONSOLIDATED AND COMBINED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Trade sales, services and fees, net	$ 622	$ 537
Cost of goods sold	454	465
Operating expenses:
Selling, general and administrative (includes corporate allocations from Huntsman Corporation of nil and $24, respectively)	54	50
Restructuring, impairment, and plant closing and transition costs	9	26
Other (income) expense, net	(3)	10
Total operating expenses	60	86
Operating income (loss)	108	(14)
Interest expense	(13)	(14)
Interest income	3	2
Other income	2	1
Income (loss) from continuing operations before income taxes	100	(25)
Income tax (expense) benefit	(20)	4
Income (loss) from continuing operations	80	(21)
Income from discontinued operations, net of tax	0	8
Net income (loss)	80	(13)
Net income attributable to noncontrolling interests	(2)	(3)
Net income (loss) attributable to Venator	$ 78	$ (16)
Basic earnings (loss) per share:
Income (loss) from continuing operations attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	$ 0.73	$ (0.23)
Income from discontinued operations attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	0.00	0.08
Net income (loss) attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	0.73	(0.15)
Diluted earnings (loss) per share:
Income (loss) from continuing operations attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	0.73	(0.23)
Income from discontinued operations attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	0.00	0.08
Net income (loss) attributable to Venator Materials PLC ordinary shareholders (in dollars per share)	$ 0.73	$ (0.15)