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v3.25.1

Indebtedness - Advance and Warehouse Facilities Summary (Details) - USD ($) | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Advance, warehouse and MSR facilities, net | $ 6,313,000,000 | $ 6,495,000,000
Advance Facilities | Servicing | Loans payable | $350 Advance Facility Due October 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 350,000,000 |
Outstanding | 108,000,000 | 119,000,000
Collateral Pledged | 136,000,000 | 151,000,000
Advance Facilities | Servicing | Loans payable | $500 Advance Facility Due August 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 318,000,000 | 423,000,000
Collateral Pledged | 358,000,000 | 475,000,000
Advance Facilities | Servicing | Loans payable | $50 Advance facility due July 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 50,000,000 |
Outstanding | 22,000,000 | 22,000,000
Collateral Pledged | 26,000,000 | 40,000,000
Advance Facilities | Servicing | Loans payable | $500 Advance Facility Due July 2026 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 257,000,000 | 285,000,000
Collateral Pledged | 366,000,000 | 394,000,000
Advance Facilities | Servicing | Notes payable to banks |  |
Debt Instrument [Line Items] |  |
Outstanding | 705,000,000 | 849,000,000
Collateral Pledged | 886,000,000 | 1,060,000,000
Advance Facilities | Servicing | Notes payable to banks | $50 Advance facility due July 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 50,000,000 |
Warehouse Facilities | Originations | Notes payable to banks |  |
Debt Instrument [Line Items] |  |
Outstanding | 2,324,000,000 | 2,016,000,000
Collateral Pledged | 2,505,000,000 | 2,168,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1500 Warehouse Facility Due June 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,500,000,000 |
Outstanding | 90,000,000 | 68,000,000
Collateral Pledged | 90,000,000 | 71,000,000
Warehouse Facilities | Originations | Notes payable to banks | $750 Warehouse Facility due March 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 750,000,000 |
Outstanding | 195,000,000 | 112,000,000
Collateral Pledged | 230,000,000 | 140,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1000 Warehouse Facility Due October 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,000,000,000 | 750,000,000
Outstanding | 388,000,000 | 489,000,000
Collateral Pledged | 417,000,000 | 530,000,000
Warehouse Facilities | Originations | Notes payable to banks | $500 Million WH Facility Due June 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 56,000,000 | 90,000,000
Collateral Pledged | 72,000,000 | 99,000,000
Warehouse Facilities | Originations | Notes payable to banks | $600 Million Warehouse Facility Due August 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 600,000,000 |
Outstanding | 404,000,000 | 368,000,000
Collateral Pledged | 413,000,000 | 381,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1200 Warehouse Facility Due September 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,200,000,000 |
Outstanding | 283,000,000 | 131,000,000
Collateral Pledged | 323,000,000 | 148,000,000
Warehouse Facilities | Originations | Notes payable to banks | $200 Million Warehouse Facility Due December 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 200,000,000 |
Outstanding | 159,000,000 | 112,000,000
Collateral Pledged | 181,000,000 | 123,000,000
Warehouse Facilities | Originations | Notes payable to banks | $200 Warehouse Facility due April 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 200,000,000 |
Outstanding | 0 | 0
Collateral Pledged | 0 | 0
Warehouse Facilities | Originations | Notes payable to banks | $100 million WH facility due April 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 100,000,000 |
Outstanding | 36,000,000 | 56,000,000
Collateral Pledged | 41,000,000 | 62,000,000
Warehouse Facilities | Originations | Notes payable to banks | $100 million warehouse facility due April 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 100,000,000 |
Outstanding | 0 | 0
Collateral Pledged | 0 | 0
Warehouse Facilities | Originations | Notes payable to banks | $200 Warehouse Facility due July 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 200,000,000 |
Outstanding | 145,000,000 | 105,000,000
Collateral Pledged | 145,000,000 | 105,000,000
Warehouse Facilities | Originations | Notes payable to banks | $1 Warehouse Facility due December 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,000,000 |
Outstanding | 0 | 0
Collateral Pledged | 0 | 0
Warehouse Facilities | Originations | Notes payable to banks | $1,200 warehouse facility |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,200,000,000 |
Warehouse Facilities | Originations | Notes payable to banks | $500 Million WH Facility Due November 2025 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 413,000,000 | 247,000,000
Collateral Pledged | 427,000,000 | 256,000,000
Warehouse Facilities | Originations | Notes payable to banks | $250 Million WH Facility Due November 2025 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 250,000,000 |
Outstanding | 155,000,000 | 238,000,000
Collateral Pledged | 166,000,000 | 253,000,000
MSR Facilities | Servicing | Notes payable to banks |  |
Debt Instrument [Line Items] |  |
Outstanding | 3,300,000,000 | 3,650,000,000
Collateral Pledged | 10,452,000,000 | 10,788,000,000
MSR Facilities | Servicing | Notes payable to banks | $1750 warehouse facility |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 2,000,000,000 |
MSR Facilities | Servicing | Notes payable to banks | $950 million MSR facility |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 950,000,000 |
Outstanding | 345,000,000 | 550,000,000
Collateral Pledged | 1,414,000,000 | 1,711,000,000
MSR Facilities | Servicing | Notes payable to banks | $1750 million MSR facility due April 2026Member [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,750,000,000 |
Outstanding | 900,000,000 | 950,000,000
Collateral Pledged | 2,753,000,000 | 2,669,000,000
MSR Facilities | Servicing | Notes payable to banks | $950 MSR WH Facility Due July 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 950,000,000 | 750,000,000
Outstanding | 550,000,000 | 670,000,000
Collateral Pledged | 1,017,000,000 | 1,066,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 MSR Facility Due April 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 250,000,000 | 250,000,000
Collateral Pledged | 752,000,000 | 781,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 MSR Facility Due June 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 150,000,000 | 150,000,000
Collateral Pledged | 736,000,000 | 726,000,000
MSR Facilities | Servicing | Notes payable to banks | $50 Warehouse Facility Due November 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 50,000,000 |
Outstanding | 25,000,000 | 25,000,000
Collateral Pledged | 85,000,000 | 80,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 MSR WH Facility Due June 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 250,000,000 | 250,000,000
Collateral Pledged | 496,000,000 | 519,000,000
MSR Facilities | Servicing | Notes payable to banks | $1500 million MSR facility due July 2026 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,500,000,000 |
Outstanding | 475,000,000 | 475,000,000
Collateral Pledged | 2,583,000,000 | 2,607,000,000
MSR Facilities | Servicing | Notes payable to banks | $500 MSR WH Mizuho Facility Due July 2026 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
Outstanding | 355,000,000 | 330,000,000
Collateral Pledged | 616,000,000 | 629,000,000
Advance Financing, Internally Allocated | Servicing | Loans payable | $500 Advance Facility Due July 2026 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 500,000,000 |
MSR Financing, Internally Allocated | Servicing | Notes payable to banks | $950 million MSR facility |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 950,000,000 |
MSR Financing, Internally Allocated | Servicing | Notes payable to banks | $1500 million MSR facility due July 2026 |  |
Debt Instrument [Line Items] |  |
Capacity Amount | 1,500,000,000 |
Advance, Warehouse and MSR Facilities |  |
Debt Instrument [Line Items] |  |
Outstanding | 6,329,000,000 | 6,515,000,000
Collateral Pledged | 13,843,000,000 | 14,016,000,000
Unamortized debt issuance costs | (16,000,000) | (20,000,000)
Advance, warehouse and MSR facilities, net | $ 6,313,000,000 | $ 6,495,000,000

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