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Investments (Tables) | 6 Months Ended
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Jun. 30, 2020
Schedule of Investments [Line Items] |
Summary of investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Voting | ​ | Fair Value of | ​ | Gains (Losses)
​ | ​ | Interests | ​ | Investment | ​ | Recognized in Income
​ | ​ | June 30, | ​ | June 30, | ​ | December 31, | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2020 | ​ | 2020 |  | 2019 | ​ | 2020 |  | 2019 |  | 2020 |  | 2019
​ |  | ​ | ​ | (in millions)
Herbalife Nutrition Ltd. |  | 23.8% | ​ | $ | 1,585 | ​ | $ | 1,343 | ​ | $ | 557 | ​ | $ | (288) |  | $ | 42 | ​ | $ | (456)
Hertz Global Holdings, Inc. |  | 0.0% | ​ |  | — | ​ |  | 551 | ​ |  | (302) | ​ |  | (27) |  |  | (637) | ​ |  | 68
Caesars Entertainment Corporation |  | 16.7% | ​ |  | 1,386 | ​ |  | 1,243 | ​ |  | 613 | ​ |  | 249 |  |  | 18 | ​ |  | 275
​ | ​ | ​ | ​ | $ | 2,971 | ​ | $ | 3,137 | ​ | $ | 868 | ​ | $ | (66) |  | $ | (577) | ​ | $ | (113)
Investment Segment |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Assets | ​ | ​ | ​ | ​ | ​ | ​
Investments: |  | ​ |  |  | ​ |
Equity securities: |  | ​ |  |  | ​ |
Basic materials | ​ | $ | — | ​ | $ | 281
Consumer, non-cyclical | ​ |  | 1,724 | ​ |  | 2,085
Consumer, cyclical | ​ |  | 3,037 | ​ |  | 2,427
Energy | ​ |  | 2,634 | ​ |  | 1,717
Technology | ​ |  | 1,115 | ​ |  | 2,425
Industrial | ​ |  | 73 | ​ |  | 127
​ | ​ |  | 8,583 | ​ |  | 9,062
Corporate debt securities | ​ |  | 98 | ​ |  | 145
​ | ​ | $ | 8,681 | ​ | $ | 9,207
Liabilities | ​ |  |  | ​ |  |
Securities sold, not yet purchased, at fair value: | ​ |  |  | ​ |  |
Equity securities: | ​ |  |  | ​ |  |
Basic materials | ​ | $ | — | ​ | $ | 209
Consumer, non-cyclical | ​ | ​ | 716 | ​ | ​ | 29
Consumer, cyclical | ​ |  | 831 | ​ |  | 379
Energy | ​ |  | 123 | ​ |  | 124
Financial | ​ |  | — | ​ |  | 152
Technology | ​ |  | 149 | ​ |  | 217
Communication | ​ |  | — | ​ |  | 80
​ | ​ | $ | 1,819 | ​ | $ | 1,190
Other Segments and Holding Company |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Equity method investments | ​ | $ | 193 | ​ | $ | 201
Other investments (measured at fair value) | ​ |  | 624 | ​ |  | 537
​ | ​ | $ | 817 | ​ | $ | 738
Hertz |
Schedule of Investments [Line Items] |
Investments Financial Information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Other revenue from operations | ​ | $ | 2,755 | ​ | $ | 4,618
Other expenses from operations | ​ | ​ | 3,231 | ​ | ​ | 3,881
Net income (loss) | ​ | ​ | (1,209) | ​ | ​ | (107)
Net income (loss) attributable to shareholders | ​ |  | (1,203) | ​ |  | (108)
Herbalife |
Schedule of Investments [Line Items] |
Investments Financial Information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Net sales | ​ | $ | 2,609 | ​ | $ | 2,412
Cost of goods sold | ​ | ​ | 518 | ​ | ​ | 485
Net income (loss) | ​ | ​ | 161 | ​ | ​ | 173
Net income (loss) attributable to shareholders | ​ |  | 161 | ​ |  | 173

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