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Derivatives - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 USD ($) swap | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Number of interest rate swaps entered during the period | swap | 4 |  |
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months. | $ 3 |  |
Interest rate swaps | Designated as hedging instrument | Net investment income |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Reclassification from accumulated other comprehensive income | (1) | $ (3) |
Interest rate swaps | Cash flow hedging | Designated as hedging instrument |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, notional amount | 714 |  | $ 464
Collateral receivable supporting swaps | 16 |  | 10
New interest rate swaps entered during the period | Cash flow hedging | Designated as hedging instrument |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, notional amount | 300 |  |
Total return swap | Not designated as hedging instrument |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Collateral receivable supporting swaps | $ 10 |  |
Total return swap | Not designated as hedging instrument | Maximum |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Liability to return collateral related to swaps |  |  | $ 1

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