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
-SubTopic 310
-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
-Section 50
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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 (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Reinsurance
Reinsurance and indemnification recoverables, net	$ 8,726	$ 8,809
Property and casualty
Reinsurance
Paid and due from reinsurers and indemnitors	234	254
Unpaid losses estimated (including IBNR)	8,333	8,396	$ 9,111	$ 9,176
Reinsurance and indemnification recoverables, net	8,567	8,650
Accident and health insurance
Reinsurance
Reinsurance and indemnification recoverables, net	$ 159	$ 159