CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 95	$ 64	$ 240	$ (65)
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax	(79)	148	69	(36)
Actuarial gain on defined severance benefits, net of tax	2	1	7	4
Total other comprehensive (loss) income	(77)	149	76	(32)
Comprehensive income (loss)	18	213	316	(97)
Comprehensive income (loss) attributable to noncontrolling interests	0	(4)	3	(61)
Comprehensive income (loss) attributable to Coupang stockholders	$ 18	$ 217	$ 313	$ (36)