Investments (Details 4) - USD ($) $ in Millions		Jun. 30, 2015		Mar. 31, 2015	[1]	Dec. 31, 2014		Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Unrealized gain on:
Pretax		$ 919				$ 1,162
Deferred Tax and Amounts Attributable to Noncontrolling Interests		(332)				(419)
Net		587	[1]	$ 799		743	[1]	$ 805	$ 685	$ 563
Fixed maturities - annuity segment [Member]
Unrealized gain on:
Pretax	[2]	859				1,157
Deferred Tax and Amounts Attributable to Noncontrolling Interests	[2]	(301)				(405)
Net	[2]	558				752
Fixed maturities - all other [Member]
Unrealized gain on:
Pretax		396				503
Deferred Tax and Amounts Attributable to Noncontrolling Interests		(146)				(185)
Net		250				318
Equity securities [Member]
Unrealized gain on:
Pretax		203				218
Deferred Tax and Amounts Attributable to Noncontrolling Interests		(73)				(79)
Net		130				139
Deferred policy acquisition costs - annuity segment [Member]
Unrealized gain on:
Pretax		(383)				(531)
Deferred Tax and Amounts Attributable to Noncontrolling Interests		134				186
Net		(249)				(345)
Annuity benefits accumulated [Member]
Unrealized gain on:
Pretax		(107)				(112)
Deferred Tax and Amounts Attributable to Noncontrolling Interests		37				39
Net		(70)				(73)
Life, accident and health reserves [Member]
Unrealized gain on:
Pretax		(70)				(104)
Deferred Tax and Amounts Attributable to Noncontrolling Interests		24				36
Net		(46)				(68)
Unearned revenue [Member]
Unrealized gain on:
Pretax		21				31
Deferred Tax and Amounts Attributable to Noncontrolling Interests		(7)				(11)
Net		$ 14				$ 20

[1] Includes net unrealized gains of $57 million at both June 30, 2015 and March 31, 2015 and $58 million at December 31, 2014 related to securities for which only the credit portion of an other-than-temporary impairment has been recorded in earnings.

[2] Unrealized gains on fixed maturity investments supporting AFG’s annuity benefits accumulated.