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Investments - Components of the net unrealized gain on securities that is included in AOCI in the Balance Sheet (Details) - USD ($) $ in Millions | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Unrealized gain on: |  |  |
Pretax |  | $ 1,087 | $ 622
Deferred Tax |  | (381) | (218)
Net |  | 706 | 404
Total investments |  |  |
Unrealized gain on: |  |  |
Pretax |  | 1,673 | 960
Deferred Tax |  | (586) | (336)
Net |  | 1,087 | 624
Total fixed maturities |  |  |
Unrealized gain on: |  |  |
Pretax |  | 1,406 | 809
Deferred Tax |  | (492) | (283)
Net |  | 914 | 526
Fixed maturities — annuity segment |  |  |
Unrealized gain on: |  |  |
Pretax | [1] | 1,131 | 640
Deferred Tax | [1] | (396) | (224)
Net | [1] | 735 | 416
Fixed maturities — all other |  |  |
Unrealized gain on: |  |  |
Pretax |  | 275 | 169
Deferred Tax |  | (96) | (59)
Net |  | 179 | 110
Equity securities |  |  |
Unrealized gain on: |  |  |
Pretax |  | 267 | 151
Deferred Tax |  | (94) | (53)
Net |  | 173 | 98
Deferred policy acquisition costs — annuity segment |  |  |
Unrealized gain on: |  |  |
Pretax |  | (465) | (273)
Deferred Tax |  | 163 | 96
Net |  | (302) | (177)
Annuity benefits accumulated |  |  |
Unrealized gain on: |  |  |
Pretax |  | (141) | (78)
Deferred Tax |  | 49 | 27
Net |  | (92) | (51)
Unearned revenue |  |  |
Unrealized gain on: |  |  |
Pretax |  | 20 | 13
Deferred Tax |  | (7) | (5)
Net |  | $ 13 | $ 8
[1] | Net unrealized gains on fixed maturity investments supporting AFG’s annuity benefits accumulated.

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- Definition Accumulated other comprehensive income loss available for sale securities adjustment deferred tax and non controlling interest. + References No definition available. + Details
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- Definition Accumulated other comprehensive income loss available for sale securities adjustment, pretax. + References No definition available. + Details
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