Indicates the number of financing receivables under each classification.

No definition available.

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Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of allowance for credit loss to total financing receivable outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (1)
-Publisher SEC

+ Details

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Namespace Prefix:	srt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

+ Details

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

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=aig_FinancialAssetLessThanOrEqualTo90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=aig_FinancialAssetGreaterThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_ApartmentBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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Lending Activities - Credit Quality Performance Indicators for Commercial Mortgages (Details) $ in Millions	Sep. 30, 2024 USD ($) loan	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($) loan	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit losses	$ 37,803		$ 37,776
Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	204		213
Total	$ 3,696		$ 3,836
Allowance for credit losses	$ 165	$ 162	$ 138	$ 133	$ 116	$ 109
Percent of Total	100.00%		100.00%
Percentage of total, allowance for credit losses	4.00%		4.00%
Commercial mortgage loans \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	197		211
Total	$ 3,459		$ 3,783
Percent of Total	94.00%		99.00%
Commercial mortgage loans \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	3		1
Total	$ 36		$ 11
Percent of Total	1.00%		0.00%
Commercial mortgage loans \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	4		1
Total	$ 201		$ 42
Percent of Total	5.00%		1.00%
Commercial mortgage loans \| Apartments
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 1,198		$ 1,267
Allowance for credit losses	5		9
Commercial mortgage loans \| Apartments \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,198		1,267
Commercial mortgage loans \| Apartments \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Apartments \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Offices
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,194		1,223
Allowance for credit losses	102		75
Commercial mortgage loans \| Offices \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,057		1,212
Commercial mortgage loans \| Offices \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		11
Commercial mortgage loans \| Offices \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	137		0
Commercial mortgage loans \| Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total	461		518
Allowance for credit losses	35		36
Commercial mortgage loans \| Retail \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	361		476
Commercial mortgage loans \| Retail \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	36		0
Commercial mortgage loans \| Retail \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	64		42
Commercial mortgage loans \| Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	444		460
Allowance for credit losses	9		7
Commercial mortgage loans \| Industrial \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	444		460
Commercial mortgage loans \| Industrial \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Industrial \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Hotel
Financing Receivable, Credit Quality Indicator [Line Items]
Total	272		247
Allowance for credit losses	13		9
Commercial mortgage loans \| Hotel \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	272		247
Commercial mortgage loans \| Hotel \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Hotel \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Others
Financing Receivable, Credit Quality Indicator [Line Items]
Total	127		121
Allowance for credit losses	1		2
Commercial mortgage loans \| Others \| In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	127		121
Commercial mortgage loans \| Others \| 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0		0
Commercial mortgage loans \| Others \| >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 0		$ 0