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v3.25.3

Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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2023 & 2025 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging | Designated as Hedging Instrument |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Interest rate fair value hedge asset at fair value | $ 27 | $ 7
2022 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging | Designated as Hedging Instrument |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value hedge derivative instrument liabilities at fair value | 93 | 123
Forward Starting Interest Rate Swap | Cash Flow Hedge | Designated as Hedging Instrument |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Cash flow hedge derivative instrument assets at fair value | 0 | 0
Cash flow hedge derivative instrument liabilities at fair value | 0 | 0
Carrying Value |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Total Investments at Fair Value | 172 | 214
Total investments at amortized cost | $ 171 | $ 218

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