Allowance for Loan Losses - Education Loans - Amount of Loans Modified for Borrowers Financial Difficulty and Payment Default (Details) - Private Education Loans [Member] - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Accounts Notes And Loans Receivable [Line Items] | ||||
| Modified Loans (Amortized Cost) | $ 187 | $ 142 | $ 241 | $ 345 |
| Payment Default (Par) | 189 | 145 | 244 | 353 |
| Charge-offs (par) | $ 16 | $ 19 | $ 53 | $ 44 |
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- Definition Financing receivable, modifications, impairment write down. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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