Schedule I - Condensed Financial information of Parent (Coupang, Inc.) - Condensed Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 6,318	$ 5,879	$ 5,243
Total current assets	9,691	8,994
Total assets	17,787	15,344
Liabilities and stockholders' equity
Other current liabilities	851	593
Stockholders' equity
Common stock	0	0
Additional paid-in capital	9,025	8,736
Accumulated other comprehensive loss	(381)	(404)
Accumulated deficit	(4,021)	(4,229)
Total liabilities, redeemable noncontrolling interests, and equity	17,787	15,344
Parent company
Assets
Cash and cash equivalents	709	1,016
Prepaids and other current assets	456	66
Total current assets	1,165	1,082
Other assets	79	12
Investment in subsidiaries	3,426	3,058
Total assets	4,670	4,152
Liabilities and stockholders' equity
Other current liabilities	47	49
Stockholders' equity
Common stock	0	0
Additional paid-in capital	9,025	8,736
Accumulated other comprehensive loss	(381)	(404)
Accumulated deficit	(4,021)	(4,229)
Equity, Attributable to Parent, Total	4,623	4,103
Total liabilities, redeemable noncontrolling interests, and equity	$ 4,670	$ 4,152