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Investments (Tables) | 3 Months Ended
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Mar. 31, 2020
Schedule of Investments [Line Items] |
Summary of investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Voting | ​ | Fair Value of | ​ | Gains (Losses)
​ | ​ | Interests | ​ | Investment | ​ | Recognized in Income
​ | ​ | March 31, | ​ | March 31, | ​ | December 31, | ​ | Three Months Ended March 31,
​ |  | 2020 | ​ | 2020 |  | 2019 | ​ | 2020 |  | 2019
​ |  | ​ | ​ | (in millions)
Herbalife Nutrition Ltd. |  | 23.9% | ​ | $ | 1,027 | ​ | $ | 1,343 | ​ | $ | (515) | ​ | $ | (168)
Hertz Global Holdings, Inc. |  | 38.9% | ​ |  | 342 | ​ |  | 551 | ​ |  | (335) | ​ |  | 95
Caesars Entertainment Corporation |  | 16.7% | ​ |  | 772 | ​ |  | 1,243 | ​ |  | (595) | ​ |  | 26
​ | ​ | ​ | ​ | $ | 2,141 | ​ | $ | 3,137 | ​ | $ | (1,445) | ​ | $ | (47)
Investments Financial Information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Net sales | ​ | $ | 1,262 | ​ | $ | 1,172
Cost of goods sold | ​ | ​ | 246 | ​ | ​ | 242
Net income (loss) | ​ | ​ | 46 | ​ | ​ | 96
Net income (loss) attributable to shareholders | ​ |  | 46 | ​ |  | 96
Investment Segment |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Assets | ​ | ​ | ​ | ​ | ​ | ​
Investments: |  | ​ |  |  | ​ |
Equity securities: |  | ​ |  |  | ​ |
Basic materials | ​ | $ | 181 | ​ | $ | 281
Consumer, non-cyclical | ​ |  | 1,478 | ​ |  | 2,085
Consumer, cyclical | ​ |  | 1,881 | ​ |  | 2,427
Energy | ​ |  | 1,758 | ​ |  | 1,717
Technology | ​ |  | 2,061 | ​ |  | 2,425
Industrial | ​ |  | 61 | ​ |  | 127
​ | ​ |  | 7,420 | ​ |  | 9,062
Corporate debt securities | ​ |  | 99 | ​ |  | 145
​ | ​ | $ | 7,519 | ​ | $ | 9,207
Liabilities | ​ |  |  | ​ |  |
Securities sold, not yet purchased, at fair value: | ​ |  |  | ​ |  |
Equity securities: | ​ |  |  | ​ |  |
Basic materials | ​ | $ | 23 | ​ | $ | 209
Consumer, non-cyclical | ​ | ​ | — | ​ | ​ | 29
Consumer, cyclical | ​ |  | 188 | ​ |  | 379
Energy | ​ |  | — | ​ |  | 124
Financial | ​ |  | 84 | ​ |  | 152
Technology | ​ |  | 138 | ​ |  | 217
Communication | ​ |  | 26 | ​ |  | 80
​ | ​ | $ | 459 | ​ | $ | 1,190
Other Segments and Holding Company |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2020 |  | 2019
​ | ​ | (in millions)
Equity method investments | ​ | $ | 199 | ​ | $ | 201
Other investments (measured at fair value) | ​ |  | 479 | ​ |  | 537
​ | ​ | $ | 678 | ​ | $ | 738

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- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI http://asc.fasb.org/topic&trid=2197064 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -URI http://asc.fasb.org/topic&trid=75115024 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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