Name:	aig_PolicyholderContractDepositsLineItems
Namespace Prefix:	aig_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the maximum withdrawal charges or surrender charges applied on withdrawal of funds from an insurance or annuity contract (usually stated as a percentage of premiums).

No definition available.

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

Represents the minimum withdrawal charges or surrender charges applied on withdrawal of funds from an insurance or annuity contract (usually stated as a percentage of premiums).

No definition available.

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

- References

No definition available.

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

Ratio with total life insurance premiums in numerator and total GAAP premiums in the denominator.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Name:	us-gaap_LifePremiumsAsPercentageOfGrossPremiums
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of participating insurance contract to insurance contracts in force.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 50
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6483535&loc=d3e16392-158451

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.14(b)(1))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Name:	us-gaap_ParticipatingPoliciesAsPercentageOfGrossInsuranceInForce
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Amount of liability due to policyholder for deposit held under long-duration contract issued by insurance entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 25
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121639894&loc=d3e13193-158430

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

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=aig_FixedAnnuitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=aig_GroupRetirementSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=us-gaap_LifeInsuranceSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=aig_VariableAnnuitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=us-gaap_IndexedAnnuityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=aig_InstitutionalMarketsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: