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v3.20.2

Borrowings - Company Borrowings (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Instrument [Line Items] |  |
Short-Term | $ 0 | $ 289,230
Long-Term | 4,449,767 | 4,354,037
Total | 4,449,767 | 4,643,267
Unsecured borrowings |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 0
Long-Term | 198,565 | 198,159
Total | 198,565 | 198,159
Secured borrowings |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 289,230
Long-Term | 4,251,202 | 4,155,878
Total | 4,251,202 | 4,445,108
Secured borrowings | Private Education Loan securitization |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 0
Long-Term | 4,251,202 | 4,155,878
Total | 4,251,202 | 4,155,878
Secured borrowings | Private Education Loan securitization | Fixed-rate |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 0
Long-Term | 2,832,364 | 2,629,902
Total | 2,832,364 | 2,629,902
Secured borrowings | Private Education Loan securitization | Variable-rate |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 0
Long-Term | 1,418,838 | 1,525,976
Total | 1,418,838 | 1,525,976
Secured borrowings | Secured Borrowing Facility |  |
Debt Instrument [Line Items] |  |
Short-Term | 0 | 289,230
Long-Term | 0 | 0
Total | $ 0 | $ 289,230

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