Indicates the number of financing receivables under each classification.

No definition available.

Name:	aig_FinancingReceivableNumberOfLoans
Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates the number of 90 days or less past due financing receivables under each classification.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableOnRealEstate90DaysOrLessPastDueNumberOfLoans
Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates the number of financing receivables under each classification.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableOnRealEstateCurrentNumberOfLoans
Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates the number of greater than 90 days past due financing receivables or in the process of foreclosure under each classification.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableOnRealEstateGreaterThan90DaysPastDueNumberOfLoans
Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates the number of restructured financing receivables under each classification.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableOnRealEstateRestructuredNumberOfLoans
Namespace Prefix:	aig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Financing receivables that are 90 days or less past due.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestment90DaysOrLessPastDue
Namespace Prefix:	aig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of financing receivables that are current.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentCurrentPercentage
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Financing receivables that are restructured, which may involve extending the maturity of a loan or otherwise changing the interest rate or other terms of a loan.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentCurrentRestructured
Namespace Prefix:	aig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are greater than 90 days past due or in the process of foreclosure.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentGreaterThan90DaysPastDue
Namespace Prefix:	aig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of financing receivables that are greater than 90 days past due or in the process of foreclosure.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentGreaterThan90DaysPastDuePercentage
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of total financing receivables.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentPercentage
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of financing receivables that are restructured.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableRecordedInvestmentRestructuredPercentage
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of financing receivables that have a valuation allowance established.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableValuationAllowancePercentage
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of financing receivables that has a general valuation allowance established.

+ References

No definition available.

+ Details

Name:	aig_FinancingReceivableValuationAllowancePercentageGeneral
Namespace Prefix:	aig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of allowance to cover credit losses on loans and leases.

+ References

No definition available.

+ Details

Name:	aig_LoansAndLeasesReceivableAllowanceGeneral
Namespace Prefix:	aig_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of allowance to cover specific credit losses on loans and leases.

+ References

No definition available.

+ Details

Name:	aig_LoansAndLeasesReceivableAllowanceSpecific
Namespace Prefix:	aig_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentCurrent
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

No definition available.

+ Details

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

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

+ Details

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

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LoansAndLeasesReceivableNetReportedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	aig_DebtServiceCoverageRatioByRangeAxis=aig_DebtServiceCoverageRatioRangeOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	aig_DebtServiceCoverageRatioByRangeAxis=aig_DebtServiceCoverageRatioRangeTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	aig_DebtServiceCoverageRatioByRangeAxis=aig_DebtServiceCoverageRatioRangeThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=aig_CommercialMortgageCreditQualityIndicatorRangeOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=aig_CommercialMortgageCreditQualityIndicatorRangeTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=aig_CommercialMortgageCreditQualityIndicatorRangeThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=aig_CommercialMortgageCreditQualityIndicatorRangeFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LENDING ACTIVITIES (Details - Credit quality indicators for commercial mortgage loans) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016 USD ($) loan	Dec. 31, 2015 USD ($) loan	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commercial Mortgage Recorded Investment [Line Items]
Mortgage and other loans receivable, net	$ 31,261	$ 29,565
Allowance for credit losses	308	308	$ 262	$ 271
Total mortgage and other loans receivable	31,569	29,873
Apartments
Commercial Mortgage Recorded Investment [Line Items]
In good standing	4,342	3,916
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	3	3
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	48	35
Allowance for credit losses	48	35
Total mortgage and other loans receivable	4,345	3,919
Offices
Commercial Mortgage Recorded Investment [Line Items]
In good standing	7,647	7,484
Restructured	235	156
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	12	205
Allowance for credit losses, Specific	4	16
Allowance for credit losses, General	55	47
Allowance for credit losses	59	63
Total mortgage and other loans receivable	7,894	7,845
Retail
Commercial Mortgage Recorded Investment [Line Items]
In good standing	4,995	4,809
Restructured	19	25
90 days or less delinquent	0	4
Greater than 90 days delinquent or in process of foreclosure	0	0
Allowance for credit losses, Specific	1	1
Allowance for credit losses, General	44	29
Allowance for credit losses	45	30
Total mortgage and other loans receivable	5,014	4,838
Industrial
Commercial Mortgage Recorded Investment [Line Items]
In good standing	1,713	1,902
Restructured	0	6
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	6
Allowance for credit losses, Specific	6	6
Allowance for credit losses, General	6	8
Allowance for credit losses	12	14
Total mortgage and other loans receivable	1,713	1,914
Hotel
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,454	2,082
Restructured	16	16
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	6	0
Allowance for credit losses, Specific	1	1
Allowance for credit losses, General	21	15
Allowance for credit losses	22	16
Total mortgage and other loans receivable	2,476	2,098
Others
Commercial Mortgage Recorded Investment [Line Items]
In good standing	1,450	1,435
Restructured	0	6
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	12	12
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	12	13
Allowance for credit losses	12	13
Total mortgage and other loans receivable	$ 1,462	$ 1,453
Commercial mortgages
Commercial Mortgage Recorded Investment [Line Items]
Number of loans in good standing \| loan	802	830
Number of loans restructured \| loan	8	9
Number of loans 90 days or less delinquent \| loan	0	1
Number of loans greater than 90 days delinquent or in process of foreclosure \| loan	7	9
Number of Loans \| loan	817	849
In good standing	$ 22,601	$ 21,628
Restructured	270	209
90 days or less delinquent	0	4
Greater than 90 days delinquent or in process of foreclosure	33	226
Allowance for credit losses, Specific	12	24
Allowance for credit losses, General	186	147
Allowance for credit losses	$ 198	$ 171
Percentage of loans that are current as to payments of principal and interest	99.00%	98.00%
Percentage restructured	1.00%	1.00%
Percentage greater than 90 days delinquent or in foreclosure	0.00%	1.00%
Percentage Total	100.00%	100.00%
Percentage of loans with valuation allowance, Genaral	1.00%	1.00%
Percentage of loans with allowance for losses	1.00%	1.00%
Total mortgage and other loans receivable	$ 22,904	$ 22,067
Commercial mortgages \| Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	19,786	18,660
Commercial mortgages \| 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	2,656	2,710
Commercial mortgages \| Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	462	697
Commercial mortgages \| Less than 65%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	14,117	12,137
Commercial mortgages \| Less than 65% \| Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	12,105	10,283
Commercial mortgages \| Less than 65% \| 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,873	1,704
Commercial mortgages \| Less than 65% \| Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	139	150
Commercial mortgages \| 65% to 75%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	6,055	7,017
Commercial mortgages \| 65% to 75% \| Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	5,660	6,361
Commercial mortgages \| 65% to 75% \| 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	352	611
Commercial mortgages \| 65% to 75% \| Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	43	45
Commercial mortgages \| 76% to 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,693	1,620
Commercial mortgages \| 76% to 80% \| Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,445	1,370
Commercial mortgages \| 76% to 80% \| 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	164	169
Commercial mortgages \| 76% to 80% \| Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	84	81
Commercial mortgages \| Greater than 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,039	1,293
Commercial mortgages \| Greater than 80% \| Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	576	646
Commercial mortgages \| Greater than 80% \| 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	267	226
Commercial mortgages \| Greater than 80% \| Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	$ 196	$ 421