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Mortgage Servicing - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2022
Servicing Asset at Amortized Cost [Line Items] |  |  |
Float balances | $ 1,560 | $ 2,040 | $ 1,540
MAV Asset Vehicle LLC |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
UPB of MSRs sold | $ 2,300 |  |

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- Definition Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column G)(Footnote 6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1 + Details
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