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Securitizations and Financings - Assets and Liabilities of Consolidated VIEs (Details) - Residential mortgage - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Assets - transfers accounted for as secured borrowings | $ 994 | $ 1,208
Liabilities - transfers accounted for as secured borrowings | 1,631 | 1,296
Restricted cash |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Assets - transfers accounted for as secured borrowings | 134 | 188
Advances and other receivables, net |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Assets - transfers accounted for as secured borrowings | 860 | 1,020
Payables and other liabilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Liabilities - transfers accounted for as secured borrowings | 3 | 3
Advance Facilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Liabilities - transfers accounted for as secured borrowings | 680 | 824
Warehouse Facilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Liabilities - transfers accounted for as secured borrowings | 478 | 0
MSR Facilities |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |
Liabilities - transfers accounted for as secured borrowings | $ 470 | $ 469

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