Managed Investment Entities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gains (losses) on change in fair value of assets/liabilities:
Assets	[1]	$ (116)	$ (66)	$ 11
Liabilities	[1]	82	22	(25)
Management fees paid to AFG		15	25	16
CLO earnings (losses) attributable to:
AFG shareholders	[2]	(6)	16	35
Noncontrolling interests	[2]	$ 0	$ (51)	$ (26)

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

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