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Segments of Operations (Details 1) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Segment Reporting Information [Line Items] |  |  |
Earnings before realized gains (losses) and income taxes |  | $ 174 | $ 173
Realized gains (losses) on securities |  | (18) | 19
Realized losses on subsidiaries |  | 0 | (162)
Earnings before income taxes |  | 156 | 30
Property and Casualty Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | 87 | 60
Investment and other income, net |  | 75 | 73
Earnings before realized gains (losses) and income taxes |  | 162 | 133
Annuity [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Earnings before realized gains (losses) and income taxes |  | 53 | 75
Run-off Long-term Care and Life [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Earnings before realized gains (losses) and income taxes | [1] | (1) | 4
Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Earnings before realized gains (losses) and income taxes | [2] | (40) | (39)
Specialty Property and transportation [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | 32 | 7
Specialty casualty [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | 29 | 28
Specialty financial [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | 23 | 22
Specialty Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | 2 | 3
Other Lines [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Property and casualty insurance underwriting |  | $ 1 | $ 0
[1] | AFG sold substantially all of its run-off long-term care insurance business in December 2015
[2] | Includes holding company interest and expenses.

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