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FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair Value Level Disclosure (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets disclosed at fair value |  |
Investment securities | $ 223 | $ 217
Total assets measured at fair value | 223 | 217
Level 1 |  |
Assets disclosed at fair value |  |
Investment securities | 49 | 47
Total assets measured at fair value | 49 | 47
Level 2 |  |
Assets disclosed at fair value |  |
Investment securities | 174 | 170
Total assets measured at fair value | 174 | 170
Level 3 |  |
Assets disclosed at fair value |  |
Investment securities | 0 | 0
Total assets measured at fair value | $ 0 | $ 0

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