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v3.23.3

Indebtedness - Advance and Warehouse Facilities Summary (Details) - USD ($) | Oct. 01, 2023 | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Advance, warehouse and MSR facilities, net |  | $ 3,545,000,000 | $ 2,885,000,000
Advance Facilities | Servicing | Loans payable | $350 advance facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 350,000,000 |
Outstanding |  | 129,000,000 | 150,000,000
Collateral Pledged |  | 166,000,000 | 189,000,000
Advance Facilities | Servicing | Loans payable | $250 advance facility(1) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 250,000,000 |
Outstanding |  | 207,000,000 | 308,000,000
Collateral Pledged |  | 284,000,000 | 410,000,000
Advance Facilities | Servicing | Loans payable | $250 advance facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 250,000,000 |
Outstanding |  | 177,000,000 | 171,000,000
Collateral Pledged |  | 200,000,000 | 209,000,000
Advance Facilities | Servicing | Notes payable to banks |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding |  | 548,000,000 | 669,000,000
Collateral Pledged |  | 702,000,000 | 853,000,000
Advance Facilities | Servicing | Notes payable to banks | $75 advance facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 75,000,000 |
Outstanding |  | 35,000,000 | 40,000,000
Collateral Pledged |  | 52,000,000 | 45,000,000
Warehouse Facilities | Originations |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding |  | 817,000,000 | 817,000,000
Warehouse Facilities | Originations | Notes payable to banks |  |  |
Debt Instrument [Line Items] |  |  |
Collateral Pledged |  | 910,000,000 | 910,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1,500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,500,000,000 |
Outstanding |  | 162,000,000 | 206,000,000
Collateral Pledged |  | 163,000,000 | 272,000,000
Warehouse Facilities | Originations | Notes payable to banks | $750 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 750,000,000 |
Outstanding |  | 115,000,000 | 135,000,000
Collateral Pledged |  | 150,000,000 | 133,000,000
Warehouse Facilities | Originations | Notes payable to banks | $750 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 750,000,000 |
Outstanding |  | 124,000,000 | 202,000,000
Collateral Pledged |  | 130,000,000 | 209,000,000
Warehouse Facilities | Originations | Notes payable to banks | $500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 500,000,000 |
Outstanding |  | 39,000,000 | 76,000,000
Collateral Pledged |  | 44,000,000 | 80,000,000
Warehouse Facilities | Originations | Notes payable to banks | $500 warehouse facility(2) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 500,000,000 |
Outstanding |  | 88,000,000 | 31,000,000
Collateral Pledged |  | 90,000,000 | 32,000,000
Warehouse Facilities | Originations | Notes payable to banks | $500 warehouse facility(2) | Subsequent Event |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount | $ 350,000,000 |  |
Warehouse Facilities | Originations | Notes payable to banks | $300 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 300,000,000 |
Outstanding |  | 137,000,000 | 115,000,000
Collateral Pledged |  | 141,000,000 | 117,000,000
Warehouse Facilities | Originations | Notes payable to banks | $250 warehouse facility(3) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 250,000,000 |
Outstanding |  | 14,000,000 | 14,000,000
Collateral Pledged |  | 16,000,000 | 17,000,000
Warehouse Facilities | Originations | Notes payable to banks | $200 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 200,000,000 |
Outstanding |  | 48,000,000 | 18,000,000
Collateral Pledged |  | 50,000,000 | 21,000,000
Warehouse Facilities | Originations | Notes payable to banks | $200 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 200,000,000 |
Outstanding |  | 45,000,000 | 0
Collateral Pledged |  | 70,000,000 | 0
Warehouse Facilities | Originations | Notes payable to banks | $100 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 100,000,000 |
Outstanding |  | 40,000,000 | 19,000,000
Collateral Pledged |  | 51,000,000 | 28,000,000
Warehouse Facilities | Originations | Notes payable to banks | $100 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 100,000,000 |
Outstanding |  | 0 | 0
Collateral Pledged |  | 0 | 0
Warehouse Facilities | Originations | Notes payable to banks | $75 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 75,000,000 |
Outstanding |  | 5,000,000 | 1,000,000
Collateral Pledged |  | 5,000,000 | 1,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,000,000 |
Outstanding |  | 0 | 0
Collateral Pledged |  | 0 | 0
Warehouse Facilities | Originations | Notes payable to banks | $1,000 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,000,000,000 |
MSR Facilities | Servicing | Notes payable to banks |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding |  | 2,195,000,000 | 1,410,000,000
Collateral Pledged |  | 6,620,000,000 | 5,499,000,000
MSR Facilities | Servicing | Notes payable to banks | $1,500 warehouse facility(1) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,500,000,000 |
Outstanding |  | 250,000,000 | 260,000,000
Collateral Pledged |  | 2,303,000,000 | 2,284,000,000
MSR Facilities | Servicing | Notes payable to banks | $1,500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,500,000,000 |
Outstanding |  | 900,000,000 | 380,000,000
Collateral Pledged |  | 1,324,000,000 | 927,000,000
MSR Facilities | Servicing | Notes payable to banks | $750 warehouse facility(3) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 750,000,000 |
Outstanding |  | 325,000,000 | 380,000,000
Collateral Pledged |  | 1,391,000,000 | 1,482,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 500,000,000 |
Outstanding |  | 255,000,000 | 365,000,000
Collateral Pledged |  | 705,000,000 | 732,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 500,000,000 |
Outstanding |  | 210,000,000 | 0
Collateral Pledged |  | 396,000,000 | 0
MSR Facilities | Servicing | Notes payable to banks | $500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 500,000,000 |
Outstanding |  | 225,000,000 | 0
Collateral Pledged |  | 434,000,000 | 0
MSR Facilities | Servicing | Notes payable to banks | $50 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 50,000,000 |
Outstanding |  | 30,000,000 | 25,000,000
Collateral Pledged |  | 67,000,000 | 74,000,000
MSR Facilities | Servicing | Notes payable to banks | $1750 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,750,000,000 |
Advance Financing, Internally Allocated | Servicing | Loans payable | $250 advance facility(1) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 250,000,000 |
MSR Financing, Internally Allocated | Servicing | Notes payable to banks | $1,500 warehouse facility(1) |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 1,500,000,000 |
MSR Financing, Internally Allocated | Servicing | Notes payable to banks | $500 warehouse facility |  |  |
Debt Instrument [Line Items] |  |  |
Capacity Amount |  | 750,000,000 |
Advance, Warehouse and MSR Facilities |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding |  | 3,560,000,000 | 2,896,000,000
Collateral Pledged |  | 8,232,000,000 | 7,262,000,000
Unamortized debt issuance costs |  | (15,000,000) | (11,000,000)
Advance, warehouse and MSR facilities, net |  | $ 3,545,000,000 | $ 2,885,000,000

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