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Summary of Significant Accounting Policies - Prepaid Expenses (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Loss Contingencies [Line Items] |  |
Prepaid maintenance, postage and insurance | $ 216 | $ 187
Other prepaid expenses | 188 | 236
Total prepaid expenses | 404 | 423
Income taxes receivables | 501 | 534
Other current assets | 700 | 737
Total other current assets | 2,683 | 1,921
Total prepaid expenses and other current assets | 3,087 | 2,344
Clover Capital |  |
Loss Contingencies [Line Items] |  |
Cash advances | 381 | 269
Foreign Banks And Alliance Partners |  |
Loss Contingencies [Line Items] |  |
Cash advances | 1,101 | 381
Merchants Utilizing Clover Capital Cash Advance Program |  |
Loss Contingencies [Line Items] |  |
Cash advances | 397 | 281
Financing receivable, allowance for credit loss, excluding accrued interest, current | $ 16 | $ 12

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