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FAIR VALUE MEASUREMENT OF ASSETS AND LIABILITIES - Fair Value of Financial Assets and Liabilities Measured at Amortized Cost (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Reported Value Measurement | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | $ 23,811 | $ 14,069
Reported Value Measurement | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 26,100 | 18,627
Reported Value Measurement | Accounts payable and accrued expenses | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 4,053 | 3,196
Reported Value Measurement | Funds payable to customers | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 10,567 | 6,954
Reported Value Measurement | Amounts payable due to credit and debit card transactions | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 3,059 | 1,964
Reported Value Measurement | Salaries and social security payable | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 689 | 564
Reported Value Measurement | Loans payable and other financial liabilities | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 7,728 | 5,593
Reported Value Measurement | Other liabilities | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 4 | 356
Reported Value Measurement | Cash and cash equivalents | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 1,898 | 2,059
Reported Value Measurement | Restricted cash and cash equivalents | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 6,258 | 1,298
Reported Value Measurement | Investments | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 316 | 160
Reported Value Measurement | Accounts receivables, net | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 298 | 255
Reported Value Measurement | Credit cards | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 6,648 | 5,288
Reported Value Measurement | Loans receivable, net | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 8,192 | 4,895
Reported Value Measurement | Other assets | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 201 | 114
Estimate Of Fair Value Measurement | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 23,673 | 14,014
Estimate Of Fair Value Measurement | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 26,059 | 18,533
Estimate Of Fair Value Measurement | Accounts payable and accrued expenses | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 4,053 | 3,196
Estimate Of Fair Value Measurement | Funds payable to customers | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 10,567 | 6,954
Estimate Of Fair Value Measurement | Amounts payable due to credit and debit card transactions | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 3,059 | 1,964
Estimate Of Fair Value Measurement | Salaries and social security payable | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 689 | 564
Estimate Of Fair Value Measurement | Loans payable and other financial liabilities | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 7,687 | 5,499
Estimate Of Fair Value Measurement | Other liabilities | Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Liabilities | 4 | 356
Estimate Of Fair Value Measurement | Cash and cash equivalents | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 1,898 | 2,059
Estimate Of Fair Value Measurement | Restricted cash and cash equivalents | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 6,258 | 1,298
Estimate Of Fair Value Measurement | Investments | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 316 | 160
Estimate Of Fair Value Measurement | Accounts receivables, net | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 298 | 255
Estimate Of Fair Value Measurement | Credit cards | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 6,648 | 5,288
Estimate Of Fair Value Measurement | Loans receivable, net | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | 8,054 | 4,840
Estimate Of Fair Value Measurement | Other assets | Assets |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total Assets | $ 201 | $ 114

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