Reinsurance (Components of Reinsurance Receivables) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reinsurance receivables related to insurance reserves
Ceded claim and claim adjustment expenses	$ 3,835	$ 4,019	$ 3,934	$ 4,094
Ceded future policy benefits	226	233
Reinsurance receivables related to paid losses	143	203
Reinsurance receivables	4,204	4,455
Allowance for uncollectible reinsurance	(25)	(29)
Reinsurance receivables, net of allowance for uncollectible reinsurance	$ 4,179	$ 4,426

Ceded Claim And Claim Adjustment Expenses

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- Definition

Ceded Future Policy Benefits

+ References

No definition available.

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- References

No definition available.

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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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- Definition

Amount of allowance for credit loss on reinsurance recoverable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

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.

+ References

No definition available.

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- Definition

Amount before valuation allowance of reinsurance recoverables on paid losses.

+ References

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