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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, 2024	Dec. 31, 2023
Reported Value Measurement | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	$ 12,239	$ 9,351
Reported Value Measurement | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	16,685	12,905
Reported Value Measurement | Accounts payable and accrued expenses | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	2,940	2,117
Reported Value Measurement | Funds payable to customers | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	5,854	4,475
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	1,716	1,092
Reported Value Measurement | Salaries and social security payable | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	532	441
Reported Value Measurement | Loans payable and other financial liabilities | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	5,252	4,495
Reported Value Measurement | Other liabilities | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	391	285
Reported Value Measurement | Cash and cash equivalents | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	1,860	1,825
Reported Value Measurement | Restricted cash and cash equivalents | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	923	898
Reported Value Measurement | Investments | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	84	15
Reported Value Measurement | Accounts receivables, net | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	216	156
Reported Value Measurement | Credit cards | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	4,585	3,632
Reported Value Measurement | Loans receivable, net | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	4,404	2,694
Reported Value Measurement | Other assets | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	167	131
Estimate Of Fair Value Measurement | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	12,222	9,333
Estimate Of Fair Value Measurement | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	16,619	12,851
Estimate Of Fair Value Measurement | Accounts payable and accrued expenses | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	2,940	2,117
Estimate Of Fair Value Measurement | Funds payable to customers | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	5,854	4,475
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	1,716	1,092
Estimate Of Fair Value Measurement | Salaries and social security payable | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	532	441
Estimate Of Fair Value Measurement | Loans payable and other financial liabilities | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	5,186	4,441
Estimate Of Fair Value Measurement | Other liabilities | Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Liabilities	391	285
Estimate Of Fair Value Measurement | Cash and cash equivalents | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	1,860	1,825
Estimate Of Fair Value Measurement | Restricted cash and cash equivalents | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	923	898
Estimate Of Fair Value Measurement | Investments | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	84	15
Estimate Of Fair Value Measurement | Accounts receivables, net | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	216	156
Estimate Of Fair Value Measurement | Credit cards | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	4,585	3,632
Estimate Of Fair Value Measurement | Loans receivable, net | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	4,387	2,676
Estimate Of Fair Value Measurement | Other assets | Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets	$ 167	$ 131

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Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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