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v3.19.3.a.u2

Reinsurance (Reinsurance on premiums - short-duration contracts) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Earned Premiums [Abstract] |  |  |  |
Net premiums | $ 1,214 |  | $ 1,426 | $ 1,394
Property and casualty [Member] |  |  |  |
Written Premiums [Abstract] |  |  |  |
Direct written premiums | 864 | [1] | 1,101 | 1,119
Ceded written premiums | (23) | [1] | (55) | (171)
Total net written premiums | 841 | [1] | 1,046 | 948
Earned Premiums [Abstract] |  |  |  |
Direct earned premiums | 841 | [1] | 1,124 | 1,107
Ceded earned premiums | (24) | [1] | (94) | (123)
Net premiums | $ 817 | [1] | $ 1,030 | $ 984
[1] | 2019 amounts include AAH premiums as of September 30, 2019 prior to the sale.

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