Name:	aig_ReductionInSharesAvailableForFutureGrantsDueToAwardsGrantedUnderIncentivePlan
Namespace Prefix:	aig_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents the number of installments over which equity based payment instruments vest.

No definition available.

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

Number of restricted equity-based awards that will become transferable in accordance with the terms of the employee's award.

No definition available.

Name:	aig_ShareBasedCompensationArrangementByShareBasedPaymentAwardTransferableShares
Namespace Prefix:	aig_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The second anniversary from grant when restricted stock will become transferable in accordance with the terms of the employee's award.

No definition available.

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

The third anniversary from grant when restricted stock awards will become transferable in accordance with the terms of the employee's award.

No definition available.

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

Represents the age that must be attained while still under the Company's employ in order for awards to vest. A significant portion of the awards vest the year after the participant reaches the required age.

No definition available.

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

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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Namespace Prefix:	us-gaap_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

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

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901