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Securitizations and Financings - Assets and Liabilities of Consolidated VIEs (Details) - Residential Mortgage - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, assets | $ 1,208 | $ 606
Transfers accounted for as secured borrowings, liabilities | 1,296 | 383
Restricted cash |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, assets | 188 | 111
Advances and other receivables, net |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, assets | 1,020 | 495
Payables and other liabilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, liabilities | 3 | 1
Advance Facilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, liabilities | 824 | 382
Warehouse & MSR Facilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Transfers accounted for as secured borrowings, liabilities | $ 469 | $ 0

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