CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 214	$ 66	$ 1,360
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	11	(352)	(2)
Actuarial gain (loss) on defined severance benefits, net of tax	11	(34)	(18)
Total other comprehensive income (loss)	22	(386)	(20)
Comprehensive income (loss)	236	(320)	1,340
Comprehensive income (loss) attributable to noncontrolling interests	3	(87)	0
Comprehensive income (loss) attributable to Coupang stockholders	$ 233	$ (233)	$ 1,340