Derivatives and Hedge Accounting (Details 2) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Notional amounts and fair values of AIG's derivative instruments:
Derivative Assets, Notional Amount	$ 112,828	$ 190,257
Derivative Assets, Fair Value	10,237	16,311
Derivative Liabilities, Notional Amount	131,660	204,853
Derivative Liabilities, Fair Value	12,974	15,380
Derivative assets, Counterparty netting	(3,784)	(6,298)
Derivative assets, Cash collateral	(1,707)	(4,096)
Total derivative assets, net	4,746	5,917
Derivative liabilities, Counterparty netting	(3,784)	(6,298)
Derivative liabilities, Cash collateral	(2,762)	(2,902)
Total derivative liabilities, net	6,428	6,180
Less: Bifurcated embedded derivative liabilities, fair value	1,362	445
Total derivative assets on balance sheet	4,746	5,917
Total derivative liabilities on balance sheet	5,066	5,735
AIGFP
Notional amounts and fair values of AIG's derivative instruments:
Derivative Assets, Notional Amount	90,573	168,033
Derivative Assets, Fair Value	7,113	12,268
Derivative Liabilities, Notional Amount	98,978	173,226
Derivative Liabilities, Fair Value	9,115	12,379
All other derivatives
Notional amounts and fair values of AIG's derivative instruments:
Derivative Assets, Notional Amount	22,255	22,224
Derivative Assets, Fair Value	3,124	4,043
Derivative Liabilities, Notional Amount	32,682	31,627
Derivative Liabilities, Fair Value	$ 3,859	$ 3,001