Investment Securities - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
May 31, 2026 |
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| Debt and Equity Securities, FV-NI [Line Items] | |||
| Debt securities, unrealized gains | $ 1 | $ 1 | |
| Proceeds for sale of debt investment securities | 1 | 0 | |
| Debt securities, realized gains (losses) | 0 | ||
| Equity securities, unrealized gain | 2 | $ 1 | |
| Common Stock | |||
| Debt and Equity Securities, FV-NI [Line Items] | |||
| Equity securities, fair value | $ 13 | $ 11 | |
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of unrealized gain on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow associated with the sale of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). 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/2003/role/disclosureRef
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- Details
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