CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (570)	$ 31	$ (836)	$ 145
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax	(70)	153	(230)	148
Actuarial gain on defined severance benefits, net of tax	1	3	2	5
Total other comprehensive (loss) income	(69)	156	(228)	153
Comprehensive (loss) income	(639)	187	(1,064)	298
Comprehensive (loss) income attributable to noncontrolling interests	0	(1)	0	3
Comprehensive (loss) income attributable to Coupang stockholders	$ (639)	$ 188	$ (1,064)	$ 295