Segment Reporting - Asset Information for Loans Segment (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Other | $ 2,363 | $ 2,385 |
| Total assets | 47,297 | 48,681 |
| Consumer Lending [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Loans, net | 15,674 | 15,451 |
| Cash and investments | 564 | 529 |
| Other | 563 | 565 |
| Total assets | 16,801 | 16,545 |
| Federal Education Loans [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Loans, net | 26,575 | 28,141 |
| Cash and investments | 848 | 1,034 |
| Other | 1,643 | 1,681 |
| Total assets | $ 29,066 | $ 30,856 |
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- Definition Sum of cash and investments, including restricted cash and investments, as of the balance sheet date. No definition available.
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest receivable and assets classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/2003/role/disclosureRef
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