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Reinsurance (Components of Reinsurance Receivables) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reinsurance receivables related to insurance reserves
Ceded claim and claim adjustment expenses	$ 5,713	$ 5,141	$ 5,191	$ 4,969
Reinsurance receivables related to paid losses	359	293
Reinsurance receivables	6,072	5,434	$ 5,438
Allowance for uncollectible reinsurance	(21)	(22)
Reinsurance receivables, net of allowance for uncollectible reinsurance	$ 6,051	$ 5,412

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Ceded Claim And Claim Adjustment Expenses

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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

+ References

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Amount of allowance for credit loss on reinsurance recoverable.

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Amount before valuation allowance recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

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Amount before valuation allowance of reinsurance recoverables on paid losses.

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