SEGMENTS - Consolidated Net Revenues by Similar Products and Services (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	$ 5,935	$ 4,333
U.S.
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	10	3
Commerce
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	3,303	2,496
Commerce \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	2,701	2,128
Commerce \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	602	368
Fintech
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	2,632	1,837
Fintech \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,473	1,057
Fintech \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	13	10
Fintech \| Credit revenues
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,146	770
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	5,935	4,333
Operating Segments \| Brazil
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	3,082	2,571
Operating Segments \| Brazil \| Commerce
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,873	1,563
Operating Segments \| Brazil \| Commerce \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,471	1,313
Operating Segments \| Brazil \| Commerce \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	402	250
Operating Segments \| Brazil \| Fintech
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,209	1,008
Operating Segments \| Brazil \| Fintech \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	606	587
Operating Segments \| Brazil \| Fintech \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	7	5
Operating Segments \| Brazil \| Fintech \| Credit revenues
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	596	416
Operating Segments \| Mexico
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,222	971
Operating Segments \| Mexico \| Commerce
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	778	613
Operating Segments \| Mexico \| Commerce \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	667	531
Operating Segments \| Mexico \| Commerce \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	111	82
Operating Segments \| Mexico \| Fintech
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	444	358
Operating Segments \| Mexico \| Fintech \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	166	123
Operating Segments \| Mexico \| Fintech \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	4	3
Operating Segments \| Mexico \| Fintech \| Credit revenues
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	274	232
Operating Segments \| Argentina
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1,382	615
Operating Segments \| Argentina \| Commerce
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	474	200
Operating Segments \| Argentina \| Commerce \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	406	176
Operating Segments \| Argentina \| Commerce \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	68	24
Operating Segments \| Argentina \| Fintech
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	908	415
Operating Segments \| Argentina \| Fintech \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	634	295
Operating Segments \| Argentina \| Fintech \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1	1
Operating Segments \| Argentina \| Fintech \| Credit revenues
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	273	119
Operating Segments \| Other Countries
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	249	176
Operating Segments \| Other Countries \| Commerce
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	178	120
Operating Segments \| Other Countries \| Commerce \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	157	108
Operating Segments \| Other Countries \| Commerce \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	21	12
Operating Segments \| Other Countries \| Fintech
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	71	56
Operating Segments \| Other Countries \| Fintech \| Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	67	52
Operating Segments \| Other Countries \| Fintech \| Product Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	1	1
Operating Segments \| Other Countries \| Fintech \| Credit revenues
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues and financial income	$ 3	$ 3