DERIVATIVE ASSETS AND DERIVATIVE LIABILITIES, Derivative Gain (Loss) Recognized in AOCI (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Interest rate (cash flow hedges) | $ 0 | $ (5) | $ (2) | $ 1 |
| Total gains/(losses) included in AOCI, net of taxes | 16 | (2) | 4 | 61 |
| Interest rate | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Interest rate (cash flow hedges) | 0 | (5) | (2) | 1 |
| Foreign exchange | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Foreign exchange (net investment hedges) | $ 16 | $ 3 | $ 6 | $ 60 |
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- Definition Other Comprehensive Income (Loss), Cash Flow Hedge And Net Investment Hedge, Gain (Loss), Before Reclassification, After Tax No definition available.
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- Definition Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), After Reclassification And Tax 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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- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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