Managed Investment Entities (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Gains (losses) on change in fair value of assets/liabilities:
Assets	[1]	$ (53)	$ (30)	$ (27)	$ (32)
Liabilities	[1]	42	5	11	(3)
Management fees paid to AFG		4	7	11	18
CLO earnings (losses) attributable to:
AFG shareholders	[2]	(3)	7	5	18
Noncontrolling interests	[2]	$ 0	$ (29)	$ 0	$ (47)

[1] Included in Revenues in AFG’s Statement of Earnings.

[2] Included in Earnings before income taxes in AFG’s Statement of Earnings.