CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (501)	$ 95	$ (1,337)	$ 240
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	384	(79)	154	69
Actuarial gain on defined severance benefits, net of tax	1	2	3	7
Total other comprehensive income (loss)	385	(77)	157	76
Comprehensive (loss) income	(116)	18	(1,180)	316
Comprehensive income attributable to noncontrolling interests	0	0	0	3
Comprehensive (loss) income attributable to Coupang stockholders	$ (116)	$ 18	$ (1,180)	$ 313

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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