Schedule III Supplementary Insurance Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplementary Insurance Information
Deferred Policy Acquisition Costs	$ 9,436	$ 8,182	$ 8,937
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	122,200	128,514	129,155
Reserve for Unearned Premiums	21,953	22,537	23,465
Policy and Contract Claims	806	889	911
Premiums and Policy Fees	39,885	40,396	41,335
Net Investment Income	15,810	20,343	14,755
Losses and Loss Expenses Incurred, Benefits	33,395	36,376	37,955
Amortization of Deferred Policy Acquisition Costs	5,157	5,709	5,486
Other Operating Expenses	9,166	9,235	8,458
Net Premiums Written	35,436	35,294	35,641
General Insurance
Supplementary Insurance Information
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	3,560	3,250	3,180
Reportable segment | AIG Property Casualty
Supplementary Insurance Information
Deferred Policy Acquisition Costs	2,623	2,441	2,375
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	83,742	90,011	91,686
Reserve for Unearned Premiums	21,341	22,161	23,236
Policy and Contract Claims	23	24	26
Premiums and Policy Fees	33,953	34,873	35,689
Net Investment Income	5,267	4,780	4,253
Losses and Loss Expenses Incurred, Benefits	22,639	25,785	27,949
Amortization of Deferred Policy Acquisition Costs	4,479	4,761	4,324
Other Operating Expenses	7,275	7,304	6,514
Net Premiums Written	34,388	34,436	34,840
Reportable segment | AIG Life and Retirement
Supplementary Insurance Information
Deferred Policy Acquisition Costs	6,723	5,672	6,502
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	36,914	36,471	34,300
Policy and Contract Claims	773	856	880
Premiums and Policy Fees	5,131	4,813	4,858
Net Investment Income	10,693	10,755	9,882
Losses and Loss Expenses Incurred, Benefits	10,106	10,014	9,170
Amortization of Deferred Policy Acquisition Costs	658	931	1,142
Other Operating Expenses	2,187	2,079	2,085
Other Operations | Mortgage Guaranty
Supplementary Insurance Information
Deferred Policy Acquisition Costs	67	44	25
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	1,348	1,957	3,104
Reserve for Unearned Premiums	612	376	229
Premiums and Policy Fees	809	715	792
Net Investment Income	132	146	132
Losses and Loss Expenses Incurred, Benefits	514	659	834
Amortization of Deferred Policy Acquisition Costs	20	17	20
Other Operating Expenses	202	177	167
Net Premiums Written	1,048	858	801
Other Operations | Other
Supplementary Insurance Information
Deferred Policy Acquisition Costs	23	25	35
Liability for Unpaid Claims and Claims Adjustment Expense, Future Policy Benefits	196	75	65
Policy and Contract Claims	10	9	5
Premiums and Policy Fees	(8)	(5)	(4)
Net Investment Income	(282)	4,662	488
Losses and Loss Expenses Incurred, Benefits	136	(82)	2
Other Operating Expenses	$ (498)	$ (325)	$ (308)