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Segments of Operations - Earnings before income taxes by segment and sub-segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Earnings before realized gains (losses) and income taxes |  | $ 41 | $ 176 | $ 458 | $ 500
Realized gains (losses) on securities |  | (12) | 2 | (1) | (32)
Realized gains on subsidiaries |  | 0 | 0 | 0 | 2
Earnings before income taxes |  | 29 | 178 | 457 | 470
Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting |  | (81) | 42 | 69 | 126
Investment and other income, net | [1] | 87 | 79 | 271 | 269
Earnings before realized gains (losses) and income taxes |  | 6 | 121 | 340 | 395
Annuity |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Earnings before realized gains (losses) and income taxes |  | 102 | 107 | 283 | 236
Run-off Long-term Care and Life |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Earnings before realized gains (losses) and income taxes |  | 2 | 1 | 4 | 0
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Earnings before realized gains (losses) and income taxes | [2] | (69) | (53) | (169) | (131)
Specialty Property and transportation | Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting |  | 6 | 44 | 70 | 91
Specialty casualty | Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting |  | 2 | 13 | 46 | 65
Specialty financial | Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting |  | (3) | 19 | 42 | 64
Other specialty | Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting |  | 4 | 2 | 3 | 7
Other lines | Property and Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and casualty insurance underwriting | [3] | $ (90) | $ (36) | $ (92) | $ (101)
[1] | Includes pretax income of $13 million (before noncontrolling interest) from the sale of a hotel in the first quarter of 2017 and pretax income of $32 million (before noncontrolling interest) from the sale of an apartment property in the second quarter of 2016.
[2] | Includes holding company interest and expenses, including losses on retirement of debt of $4 million in the third quarter of 2017 and $7 million in the second quarter of 2017, and special charges of $24 million and $5 million in the third quarter of 2017 and 2016, respectively, to increase A&E reserves related to AFG’s former railroad and manufacturing operations.
[3] | Includes special charges of $89 million and $36 million in the third quarter of 2017 and 2016, respectively, to increase asbestos and environmental (“A&E”) reserves and a $65 million special charge related to the exit of certain lines of business with AFG’s Lloyd’s-based insurer, Neon, in the second quarter of 2016.

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