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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Confirmed Obligations Outstanding At the End of the Period [Line Items] |  |  |
Accounts payable | [1] | $ 872 | $ 778
Suppliers Utilizing Third Party Services Sold Through To Financial Institutions |  |  |
Confirmed Obligations Outstanding At the End of the Period [Line Items] |  |  |
Accounts payable |  | $ 111 | $ 96
[1] | Accounts payable include related party accounts payables of $3 million and $3 million as of September 30, 2025 and December 31, 2024, respectively.

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