Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 32	$ 30
Other comprehensive income:
Foreign currency translation adjustments	1	2
Comprehensive income	33	32
Comprehensive income attributable to noncontrolling interest	1	0
Comprehensive income attributable to NOW Inc	$ 32	$ 32