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Fair Value - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Fair Value Disclosures [Abstract] |  |  |  |
Transfers out of Level 3 | $ 23 | $ 47 | $ 55 | $ 47

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