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Investments - Investment Segment - Ownership (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Summary of Investment Holdings [Line Items] |  |  |
Fair value of investments | $ 2,141 |  | $ 3,137
Gains (Losses) Recognized in Income | $ (1,445) | $ (47) |
Herbalife |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Voting Interests | 23.90% |  |
Fair value of investments | $ 1,027 |  | 1,343
Gains (Losses) Recognized in Income | $ (515) | (168) |
Hertz |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Voting Interests | 38.90% |  |
Fair value of investments | $ 342 |  | 551
Gains (Losses) Recognized in Income | $ (335) | 95 |
Caesars |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Voting Interests | 16.70% |  |
Fair value of investments | $ 772 |  | $ 1,243
Gains (Losses) Recognized in Income | $ (595) | $ 26 |

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