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Number of interest rate swaps entered during the period

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Nominal or face amount used to calculate payment on derivative.

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Derivatives - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
Derivatives - Narrative (Details) $ in Millions	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) swap	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps entered during the period \| swap			7
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months.			$ 4
Interest rate swaps \| Designated as hedging instrument \| Income Statement Location [Axis]: us-gaap:NetInvestmentIncome
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reclassification from accumulated other comprehensive income	$ (1)	$ (2)	(2)	$ (5)
Interest rate swaps \| Cash flow hedging \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	799		799		$ 464
Collateral receivable supporting swaps	19		19		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	425		425
Total return swap \| Not designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Collateral receivable supporting swaps	$ 3		$ 3
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