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v3.24.0.1

Borrowings - Secured Financing (Details) - USD ($) | 1 Months Ended |  |
--- | --- | --- | ---
Aug. 31, 2023 | Mar. 31, 2023 | Aug. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |
Total Issued |  |  |  | $ 1,147,000,000 | $ 575,000,000
Total loans and accrued interest amount securitized at inception |  |  |  | 1,292,507,000 | 674,387,000
2022-C |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total Issued |  |  | $ 575,000,000 |  |
Weighted Average Life (in years) |  |  | 4 years 8 months 8 days |  |
Principal amount of collateral |  |  |  |  | 513,000,000
Capitalized interest |  |  |  |  | $ 30,000,000
2022-C | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted Average Cost of Funds |  |  | 1.76% |  |
2023-A |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total Issued |  | $ 579,000,000 |  |  |
Weighted Average Life (in years) |  | 5 years 21 days |  |  |
Principal amount of collateral |  |  |  | 551,000,000 |
Capitalized interest |  |  |  | 40,000,000 |
2023-A | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted Average Cost of Funds |  | 1.53% |  |  |
2023-C |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total Issued | $ 568,000,000 |  |  |  |
Weighted Average Life (in years) | 4 years 11 months 4 days |  |  |  |
Principal amount of collateral |  |  |  | 579,000,000 |
Capitalized interest |  |  |  | 41,000,000 |
2023-C | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted Average Cost of Funds | 1.69% |  |  |  |
Private Education Loans Securitized in 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loans |  |  |  | 543,000,000 |
Principal amount of collateral |  |  |  | 513,000,000 |
Capitalized interest |  |  |  | 30,000,000 |
Private Education Loans Securitized in 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loans |  |  |  | 1,210,000,000 |
Principal amount of collateral |  |  |  | 1,130,000,000 |
Capitalized interest |  |  |  | $ 81,000,000 |

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