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Contracts Accounted for as Insurance - Components of Net Reserves (Salvage) Insurance Contracts (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Insurance [Abstract]
Loss and LAE reserve	$ 718	$ 869
Reinsurance recoverable on unpaid losses	(3)	(5)
Loss and LAE reserve, net	715	864
Salvage and subrogation recoverable	(529)	(801)
Salvage and subrogation reinsurance payable	2	16
Salvage and subrogation recoverable, net	(527)	(785)
Net reserve (salvage)	$ 188	$ 79

X

- Definition

The liability value when the expected salvage and subrogation exceeds the estimated loss reserve for a policy, for ceded contracts.

+ References

No definition available.

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- Definition

Liability for Unpaid Claims and Claims Adjustment Expense, Net of Reinsurance and Salvage, Subrogation and Other Recoveries

+ References

No definition available.

+ Details

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- Definition

Reserve for Losses and Loss Adjustment Expenses, Net of Reinsurance and Salvage and Subrogation Including Other Recoverables

+ References

No definition available.

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- Definition

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
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X

- Definition

Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 310
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X

- Definition

The estimated amount as of the balance sheet date to be received by an insurer from the sale of property (usually damaged) on which the insurer has paid a total claim to the insured and has obtained title to the property and the right of an insurer to pursue any course of recovery of damages, in its name or in the name of the policyholder, against a third party who is liable for costs relating to an insured event that have been paid by the insurer. Estimated salvage and subrogation is generally deducted from the liability for unpaid claims.

+ References

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