Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Sep. 30, 2025 |
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| Derivative [Line Items] | |||||
| Pre-tax gains (losses) associated with net investment hedges | $ 13,000,000 | $ (68,000,000) | $ 26,000,000 | $ (46,000,000) | |
| Maximum amount of loss | 112,000,000 | 112,000,000 | |||
| Cash collateral received | 1,000,000 | 21,000,000 | 1,000,000 | 21,000,000 | $ 2,000,000 |
| IRPAs | |||||
| Derivative [Line Items] | |||||
| Notional amount | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 |
| Forward foreign currency exchange contracts | |||||
| Derivative [Line Items] | |||||
| Derivative notional amount percent of required need coverage | 90.00% | 90.00% | |||
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- Definition Derivative Notional Amount Percent Of Required Need Coverage No definition available.
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- Definition Maximum potential amount of future undiscounted payments that could be required under the credit derivative, before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. 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/2009/role/commonPracticeRef
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- Definition Nominal or face amount used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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- Details
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