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Segments of Operations - Earnings before income taxes by segment and sub-segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Earnings before realized gains (losses) and income taxes |  | $ 14 |  | $ 203 | $ 177 |  | $ 432
Realized gains (losses) on securities |  | 204 |  | 56 | (347) |  | 240
Earnings (loss) before income taxes |  | 218 |  | 259 | (170) |  | 672
Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting |  | 9 |  | 59 | 96 |  | 146
Investment and other income, net |  | 65 | [1] | 115 | 149 | [1] | 210
Earnings before realized gains (losses) and income taxes |  | 74 |  | 174 | 245 |  | 356
Annuity |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Earnings before realized gains (losses) and income taxes |  | (17) |  | 71 | 12 |  | 161
Other |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Earnings before realized gains (losses) and income taxes | [2] | (43) |  | (42) | (80) |  | (85)
Specialty Property and transportation | Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting |  | 33 |  | 4 | 60 |  | 43
Specialty casualty | Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting |  | 27 |  | 47 | 79 |  | 83
Specialty financial | Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting |  | 0 |  | 21 | 17 |  | 34
Other specialty | Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting |  | (6) |  | (12) | (13) |  | (12)
Other lines | Property and Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Property and casualty insurance underwriting | [3] | $ (45) |  | $ (1) | $ (47) |  | $ (2)
[1] | Includes $1 million and $10 million in the second quarter and first six months of 2020, respectively, in net expenses from the Neon exited lines, before noncontrolling interest.
[2] | Includes holding company interest and expenses.
[3] | Includes an underwriting loss of $43 million in the second quarter of 2020 and $44 million in the first six months of 2020 in the Neon exited lines. Neon’s $4 million and $14 million underwriting losses in the second quarter and first six months of 2019, respectively, are included in the Specialty casualty sub-segment.

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