Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt - Letter of Credits (Details)	Dec. 31, 2022 USD ($)	Jul. 28, 2022 USD ($) lineOfCredit	Jul. 28, 2022 GIP (£) lineOfCredit	May 12, 2022 USD ($)	May 09, 2022 USD ($)	Dec. 31, 2021 USD ($)
Line of Credit Facility [Line Items]
Long-term debt	$ 7,868,000,000					$ 427,000,000
Letter of Credit \| Line of Credit \| AIG Life Letter Of Credit
Line of Credit Facility [Line Items]
Number of letters of credit \| lineOfCredit		2	2
Letter of credit \| £			£ 80,000,000
Letter of Credit \| Line of Credit \| AIG Bermuda
Line of Credit Facility [Line Items]
Letter of credit				$ 175,000,000	$ 250,000,000
Long-term debt		$ 250,000,000