Fair Value Accounting - Schedule of Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
| Beginning balance | $ 294 | $ 199 | $ 230 | $ 177 |
| Impact from the Merger | 40 | |||
| Included in earnings | 4 | 5 | 17 | 8 |
| Purchases | 14 | 13 | 31 | 37 |
| Settlements | (8) | (1) | (14) | (6) |
| Ending balance | 304 | 216 | 304 | 216 |
| Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held | $ 4 | $ 5 | $ 17 | $ 8 |
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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Impact From Merger No definition available.
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- Definition Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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