Schedule II Condensed Financial Information of Registrant - Parent Company Only (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net income	$ 675	$ 2,201	$ 3,036	$ 1,612	$ 1,973	$ 2,130	$ 2,758	$ 2,231	$ 7,524	$ 9,092	$ 3,700
Other Comprehensive Income (Loss)									4,257	(6,237)	6,096
Comprehensive income attributable to AIG									11,786	2,871	9,531
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income									7,529	9,085	3,438
Other Comprehensive Income (Loss)									4,257	(6,214)	6,093
Comprehensive income attributable to AIG									$ 11,786	$ 2,871	$ 9,531