Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fixed maturity securities:
Bonds available for sale, at fair value (amortized cost: 2012 - $244,790; 2011 - $250,770)	$ 263,014	$ 263,981
Bond trading securities, at fair value	30,919	24,364
Equity securities:
Common and preferred stock available for sale, at fair value (cost: 2012 - $1,733; 2011 - $1,820)	2,947	3,624
Common and preferred stock trading, at fair value	103	125
Mortgage and other loans receivable, net of allowance (portion measured at fair value: 2012 - $123; 2011 - $107)	19,387	19,489
Flight equipment primarily under operating leases, net of accumulated depreciation	35,095	35,539
Other invested assets (portion measured at fair value: 2012 - $16,415; 2011 - $20,876)	36,700	40,744
Short-term investments (portion measured at fair value: 2012 - $7,359; 2011 - $5,913)	24,365	22,572
Total investments	412,530	410,438
Cash	1,232	1,474
Accrued investment income	3,029	3,108
Premiums and other receivables, net of allowance	14,550	14,721
Reinsurance assets, net of allowance	27,539	27,211
Current and deferred income taxes	16,195	17,802
Deferred policy acquisition costs	8,565	8,937
Derivative assets, at fair value	3,753	4,499
Other assets, including restricted cash of $3,253 in 2012 and $2,988 in 2011 (portion measured at fair value: 2012 - $700, 2011 - $0)	13,725	12,782
Separate account assets, at fair value	54,265	51,388
Total assets	555,383	552,360
Liabilities:
Liability for unpaid claims and claims adjustment expense	87,871	91,145
Unearned premiums	24,458	23,465
Future policy benefits for life and accident and health insurance contracts	34,935	34,317
Policyholder contract deposits (portion measured at fair value: 2012 - $1,188; 2011 - $918)	126,954	126,898
Other policyholder funds	6,231	6,691
Derivative liabilities, at fair value	4,138	4,733
Other liabilities (portion measured at fair value: 2012 - $1,588; 2011 - $907)	36,993	27,554
Long-term debt (portion measured at fair value: 2012 - $9,404; 2011 - $10,766)	73,897	75,253
Separate account liabilities	54,265	51,388
Total liabilities	449,742	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	112	96
Total redeemable noncontrolling interests	112	8,523
AIG shareholders' equity:
Common stock, $2.50 par value; 5,000,000,000 shares authorized; shares issued: 2012 - 1,906,612,666 and 2011 - 1,906,568,099	4,766	4,766
Treasury stock, at cost; 2012 - 178,142,848; 2011 - 9,746,617 shares of common stock	(5,926)	(942)
Additional paid-in capital	81,764	81,787
Retained earnings	16,314	10,774
Accumulated other comprehensive income	7,791	5,153
Total AIG shareholders' equity	104,709	101,538
Non-redeemable noncontrolling interests	820	855
Total equity	105,529	102,393
Total liabilities and equity	$ 555,383	$ 552,360