FAIR VALUE MEASUREMENTS (Details - Quantitative Information About Level 3 Fair Value Measurements - Liabilities) (Level 3, USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Policyholder contract deposits
Significant unobservable inputs used for recurring fair value measurements
Fair value	0
GMWB
Significant unobservable inputs used for recurring fair value measurements
Fair value	1,121	890
GMWB \| Discounted cash flow \| Minimum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	6.00%	6.00%
Base lapse rates	1.00%	1.00%
Dynamic lapse rates	0.20%	0.20%
Mortality rates	0.10%	0.10%
Utilization rates	0.50%	0.50%
GMWB \| Discounted cash flow \| Maximum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	39.00%	39.00%
Base lapse rates	40.00%	40.00%
Dynamic lapse rates	60.00%	60.00%
Mortality rates	35.00%	35.00%
Utilization rates	30.00%	30.00%
Index Annuities
Significant unobservable inputs used for recurring fair value measurements
Fair value	361	294
Index Annuities \| Discounted cash flow \| Minimum
Significant unobservable inputs used for recurring fair value measurements
Mortality rates	0.02%	0.02%
Lapse rates	0.75%	0.75%
Index Annuities \| Discounted cash flow \| Maximum
Significant unobservable inputs used for recurring fair value measurements
Mortality rates	44.06%	44.06%
Lapse rates	66.00%	66.00%
Index Life
Significant unobservable inputs used for recurring fair value measurements
Fair value	291	259
Index Life \| Discounted cash flow \| Minimum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	10.00%	10.00%
Base lapse rates	2.00%	2.00%
Mortality rates	0.00%	0.00%
Index Life \| Discounted cash flow \| Maximum
Significant unobservable inputs used for recurring fair value measurements
Equity implied volatility	25.00%	25.00%
Base lapse rates	19.00%	19.00%
Mortality rates	20.00%	20.00%
Derivative Liabilities - Credit contracts
Significant unobservable inputs used for recurring fair value measurements
Fair value	554	791
Derivative Liabilities - Credit contracts \| BET \| Minimum
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	8.00%	5.00%
Diversity score	9	0.08
Weighted average life	3 years 1 month 2 days	2 years 8 months 1 day
Derivative Liabilities - Credit contracts \| BET \| Maximum
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	23.00%	23.00%
Diversity score	22	0.25
Weighted average life	10 years 4 months 24 days	10 years 5 months 26 days
Derivative Liabilities - Credit contracts \| BET \| Weighted-average
Significant unobservable inputs used for recurring fair value measurements
Recovery rates	11.00%	13.00%
Diversity score	14	0.13
Weighted average life	7 years 1 month 13 days	4 years 7 months 24 days

Represents the constant base lapse rates, used as an input to measure fair value.

No definition available.

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

- Definition

Represents the diversity score used as an input to measure fair value.

+ References

No definition available.

+ Details

Name:	aig_FairValueInputsDiversityScore
Namespace Prefix:	aig_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the constant dynamic lapse rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the constant implied volatility, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the constant lapse rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the constant mortality rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the recovery rate, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the constant utilization rates, used as an input to measure fair value.

+ References

No definition available.

+ Details

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

- Definition

Represents the weighted average life, used as an input to measure fair value.

+ References

No definition available.

+ Details

Name:	aig_FairValueInputsWeightedAverageLife
Namespace Prefix:	aig_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Fair value of financial and nonfinancial obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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

- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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