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Assets and Liabilities Held For Sale (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |
Total investments | $ 17,818,597 | $ 17,368,789 |
Other assets | 312,523 | 346,216 |
Total assets | 27,465,519 | 26,330,094 |
Reserve for claims and claim expenses | 9,406,707 | 9,384,349 | $ 8,391,484
Other liabilities | 351,320 | 932,024 |
Total liabilities | 18,550,147 | 17,287,419 |
Disposal Group, Held-for-sale, Not Discontinued Operations | RenaissanceRe (UK) Limited |  |  |
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |
Total investments | 440,418 | 458,731 |
Other assets | 24,165 | 40,284 |
Total assets | 464,583 | 499,015 |
Reserve for claims and claim expenses | 175,506 | 199,436 |
Other liabilities | 2,863 | 925 |
Total liabilities | $ 178,369 | $ 200,361 |

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