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v3.23.1

Allowance for Credit Losses - Age Analysis of Past Due Loans Delinquencies (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Private Education Loans allowance for losses | $ (1,479,306) | $ (1,357,075) | $ (1,227,362) | $ (1,165,335)
Loans held for investment, net | $ 21,087,563 | $ 19,626,868 |  |
Percentage of Private Education Loans in repayment, Year 1 | 51.90% | 56.90% |  |
Percentage of Private Education Loans in repayment, Year 2 | 57.90% | 67.10% |  |
Percentage of Private Education Loans in repayment, Year 3 | 68.70% | 76.10% |  |
Percentage of Private Education Loans in repayment, Year 4 | 77.10% | 80.70% |  |
Percentage of Private Education Loans in repayment, Year 5 | 81.40% | 84.50% |  |
Percentage of Private Education Loans in repayment, After Year 5 | 88.10% | 89.30% |  |
Percentage of Private Education Loans in repayment | 73.00% | 74.50% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, Year 1 | 0.30% | 0.90% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, Year 2 | 0.90% | 1.90% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, Year 3 | 2.70% | 3.10% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, Year 4 | 3.20% | 4.00% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, Year 5 | 3.90% | 4.70% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, After Year 5 | 5.50% | 6.50% |  |
Delinquent Private Education Loans in repayment as a percentage of Private Education Loans in repayment, total | 3.40% | 3.80% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, Year 1 | 0.30% | 0.70% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, Year 2 | 0.60% | 2.10% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, Year 3 | 1.40% | 1.90% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, Year 4 | 1.40% | 2.10% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, Year 5 | 1.60% | 2.20% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance, After Year 5 | 1.80% | 2.00% |  |
Loans in forbearance as a percentage of loans in repayment and forbearance | 1.40% | 1.80% |  |
Private Education Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Private Education Loans allowance for losses | $ (1,475,379) | $ (1,353,631) | $ (1,221,053) | $ (1,158,977)
Consumer Portfolio Segment | Student Loan |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Private Education Loans in forbearance, Year 1 | 442,307 | 2,432,838 |  |
Total Private Education Loans in forbearance, Year 2 | 3,292,806 | 3,049,477 |  |
Total Private Education Loans in forbearance, Year 3 | 3,054,063 | 1,967,756 |  |
Total Private Education Loans in forbearance, Year 4 | 1,920,515 | 1,754,219 |  |
Total Private Education Loans in forbearance, Year 5 | 1,699,601 | 1,365,979 |  |
Total Private Education Loans in forbearance, After Year 5 | 5,581,167 | 4,559,281 |  |
Private Education Loans in forbearance, total | 15,990,459 | 15,129,550 |  |
Total Private Education Loans, gross, Year 1 | 852,405 | 4,276,533 |  |
Total Private Education Loans, gross, Year 2 | 5,688,118 | 4,547,159 |  |
Total Private Education Loans, gross, Year 3 | 4,444,654 | 2,584,622 |  |
Total Private Education Loans, gross, Year 4 | 2,491,251 | 2,172,660 |  |
Total Private Education Loans, gross, Year 5 | 2,087,454 | 1,615,842 |  |
Total Private Education Loans, gross, After Year 5 | 6,334,121 | 5,106,872 |  |
Total Private Education Loans, gross | 21,898,003 | 20,303,688 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Year 1 | 5,089 | 26,714 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Year 2 | 29,718 | 15,933 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Year 3 | 15,151 | 9,062 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Year 4 | 8,476 | 5,496 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Year 5 | 5,109 | 3,575 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), After Year 5 | 11,508 | 8,876 |  |
Private Education Loans deferred origination costs and unamortized premium/(discount), Total | 75,051 | 69,656 |  |
Total Private Education Loans, Year 1 | 857,494 | 4,303,247 |  |
Total Private Education Loans, Year 2 | 5,717,836 | 4,563,092 |  |
Total Private Education Loans, Year 3 | 4,459,805 | 2,593,684 |  |
Total Private Education Loans, Year 4 | 2,499,727 | 2,178,156 |  |
Total Private Education Loans, Year 5 | 2,092,563 | 1,619,417 |  |
Total Private Education Loans, After Year 5 | 6,345,629 | 5,115,748 |  |
Total Private Education Loans | 21,973,054 | 20,373,344 |  |
Private Education Loans allowance for losses, Year 1 | (61,767) | (304,943) |  |
Private Education Loans allowance for losses, Year 2 | (372,947) | (323,506) |  |
Private Education Loans allowance for losses, Year 3 | (296,851) | (181,915) |  |
Private Education Loans allowance for losses, Year 4 | (170,497) | (141,424) |  |
Private Education Loans allowance for losses, Year 5 | (138,625) | (101,023) |  |
Private Education Loans allowance for losses, After Year 5 | (434,692) | (300,820) |  |
Private Education Loans allowance for losses | (1,475,379) | (1,353,631) |  |
Private Education Loans, net, Year 1 | 795,727 | 3,998,304 |  |
Private Education Loans, net, Year 2 | 5,344,889 | 4,239,586 |  |
Private Education Loans, net, Year 3 | 4,162,954 | 2,411,769 |  |
Private Education Loans, net, Year 4 | 2,329,230 | 2,036,732 |  |
Private Education Loans, net, Year 5 | 1,953,938 | 1,518,394 |  |
Private Education Loans, net, After Year 5 | 5,910,937 | 4,814,928 |  |
Loans held for investment, net | 20,497,675 | 19,019,713 |  |
Consumer Portfolio Segment | Student Loan | Loan delinquent, current |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Year 1 | 441,192 | 2,411,441 |  |
Year 2 | 3,263,917 | 2,991,839 |  |
Year 3 | 2,972,969 | 1,907,574 |  |
Year 4 | 1,859,452 | 1,683,986 |  |
Year 5 | 1,632,668 | 1,301,809 |  |
After Year 5 | 5,275,984 | 4,262,698 |  |
Loan type | 15,446,182 | 14,559,347 |  |
Consumer Portfolio Segment | Student Loan | Loan delinquent 30-59 days |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Year 1 | 1,115 | 14,164 |  |
Year 2 | 17,902 | 30,740 |  |
Year 3 | 38,446 | 30,877 |  |
Year 4 | 28,762 | 35,213 |  |
Year 5 | 31,442 | 31,366 |  |
After Year 5 | 149,333 | 144,948 |  |
Loan type | 267,000 | 287,308 |  |
Consumer Portfolio Segment | Student Loan | Loan delinquent 60-89 days |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Year 1 | 0 | 5,523 |  |
Year 2 | 6,395 | 15,056 |  |
Year 3 | 22,104 | 14,433 |  |
Year 4 | 17,136 | 18,201 |  |
Year 5 | 18,428 | 16,697 |  |
After Year 5 | 76,723 | 77,595 |  |
Loan type | 140,786 | 147,505 |  |
Consumer Portfolio Segment | Student Loan | Loan delinquent 90 days or greater past due |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Year 1 | 0 | 1,710 |  |
Year 2 | 4,592 | 11,842 |  |
Year 3 | 20,544 | 14,872 |  |
Year 4 | 15,165 | 16,819 |  |
Year 5 | 17,063 | 16,107 |  |
After Year 5 | 79,127 | 74,040 |  |
Loan type | 136,491 | 135,390 |  |
Loans In-School/Grace/Deferment | Consumer Portfolio Segment | Student Loan |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Year 1 | 408,842 | 1,827,649 |  |
Year 2 | 2,374,557 | 1,433,322 |  |
Year 3 | 1,348,206 | 578,253 |  |
Year 4 | 543,621 | 380,639 |  |
Year 5 | 359,759 | 219,280 |  |
After Year 5 | 651,401 | 455,910 |  |
Loan type | 5,686,386 | 4,895,053 |  |
Loans In Forbearance | Consumer Portfolio Segment | Student Loan |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Private Education Loans in forbearance, Year 1 | 1,256 | 16,046 |  |
Total Private Education Loans in forbearance, Year 2 | 20,755 | 64,360 |  |
Total Private Education Loans in forbearance, Year 3 | 42,385 | 38,613 |  |
Total Private Education Loans in forbearance, Year 4 | 27,115 | 37,802 |  |
Total Private Education Loans in forbearance, Year 5 | 28,094 | 30,583 |  |
Total Private Education Loans in forbearance, After Year 5 | 101,553 | 91,681 |  |
Total Private Education Loans in forbearance | $ 221,158 | $ 279,085 |  |

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