Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 21	$ 32
Other comprehensive income:
Foreign currency translation adjustments	(4)	1
Comprehensive income	17	33
Comprehensive income attributable to noncontrolling interest	0	1
Comprehensive income attributable to DNOW Inc	$ 17	$ 32