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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479584/944-310-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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Period Type:	instant

Reinsurance and Indemnification - Schedule of Reinsurance and Indemnification Recoverables, Net (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance Retention Policy [Line Items]
Reinsurance and indemnification recoverables, net	$ 8,809	$ 9,619
Property and casualty
Reinsurance Retention Policy [Line Items]
Paid and due from reinsurers and indemnitors	254	291
Unpaid losses estimated (including IBNR)	8,396	9,176	$ 9,479	$ 7,033
Reinsurance and indemnification recoverables, net	8,650	9,467
Accident and health insurance
Reinsurance Retention Policy [Line Items]
Reinsurance and indemnification recoverables, net	$ 159	$ 152