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ACCOUNTS RECEIVABLE AND OTHER FINANCIAL ASSETS - Narrative (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivables from customers | $ 1,600 | $ 1,100
Receivables from payment processors and networks | 651 | 343
Prepaid expenses, net |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Prepayments to customers | 48 | 67
Other assets, net |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Prepayments to customers | $ 5 | $ 18

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