Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Fixed maturity securities:
Bonds available for sale, at fair value (amortized cost: 2012 - $250,164; 2011 - $250,770)	$ 266,362	$ 263,981
Bond trading securities, at fair value	24,481	24,364
Equity securities:
Common and preferred stock available for sale, at fair value (cost: 2012 - $1,782; 2011 - $1,820)	3,026	3,624
Common and preferred stock trading, at fair value	123	125
Mortgage and other loans receivable, net of allowance (portion measured at fair value: 2012 - $114; 2011 - $107)	19,519	19,489
Flight equipment primarily under operating leases, net of accumulated depreciation	35,452	35,539
Other invested assets (portion measured at fair value: 2012 - $17,094; 2011 - $20,876)	37,209	40,744
Short-term investments (portion measured at fair value: 2012 - $4,408; 2011 - $5,913)	20,789	22,572
Total investments	406,961	410,438
Cash	1,315	1,474
Accrued investment income	3,165	3,108
Premiums and other receivables, net of allowance	15,648	14,721
Reinsurance assets, net of allowance	28,257	27,211
Current and deferred income taxes	15,955	17,802
Deferred policy acquisition costs	8,753	8,937
Derivative assets, at fair value	4,221	4,499
Other assets, including restricted cash of $3,520 in 2012 and $2,988 in 2011	14,103	12,782
Separate account assets, at fair value	56,025	51,388
Total assets	554,403	552,360
Liabilities:
Liability for unpaid claims and claims adjustment expense	89,785	91,145
Unearned premiums	25,034	23,465
Future policy benefits for life and accident and health insurance contracts	34,493	34,317
Policyholder contract deposits (portion measured at fair value: 2012 - $782; 2011 - $918)	126,376	126,898
Other policyholder funds	6,561	6,691
Derivative liabilities, at fair value	4,222	4,733
Other liabilities (portion measured at fair value: 2012 - $1,516; 2011 - $907)	31,346	27,554
Long-term debt (portion measured at fair value: 2012 - $10,579; 2011 - $10,766)	76,096	75,253
Separate account liabilities	56,025	51,388
Total liabilities	449,938	441,444
Commitments, contingencies and guarantees (see Note 9)
Redeemable noncontrolling interests (see Note 1):
Nonvoting, callable, junior preferred interests held by Department of the Treasury		8,427
Other	121	96
Total redeemable noncontrolling interests	121	8,523
AIG shareholders' equity:
Common stock, $2.50 par value; 5,000,000,000 shares authorized; shares issued: 2012 - 1,906,614,552 and 2011 - 1,906,568,099	4,766	4,766
Treasury stock, at cost; 2012 - 113,167,239; 2011 - 9,746,617 shares of common stock	(3,942)	(942)
Additional paid-in capital	81,772	81,787
Retained earnings	13,982	10,774
Accumulated other comprehensive income	6,873	5,153
Total AIG shareholders' equity	103,451	101,538
Non-redeemable noncontrolling interests	893	855
Total equity	104,344	102,393
Total liabilities and equity	$ 554,403	$ 552,360