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Investments and Related Matters (Tables) | 6 Months Ended
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Jun. 30, 2019
Investment Segment |
Schedule of Investments [Line Items] |
Investments |
| June 30, 2019 |  | December 31, 2018
Assets | (in millions)
Investments: |  |  |
Equity securities: |  |  |
Basic materials | $ | 410 |  |  | $ | 414 |
Consumer, non-cyclical | 1,752 |  |  | 2,161 |
Consumer, cyclical | 1,907 |  |  | 1,161 |
Energy | 2,546 |  |  | 1,598 |
Financial | 241 |  |  | 167 |
Technology | 989 |  |  | 1,040 |
Other | 155 |  |  | 145 |
| 8,000 |  |  | 6,686 |
Corporate debt securities | 191 |  |  | 181 |
| $ | 8,191 |  |  | $ | 6,867 |
Liabilities |  |  |
Securities sold, not yet purchased, at fair value: |  |  |
Equity securities: |  |  |
Consumer, non-cyclical | $ | 42 |  |  | $ | 57 |
Consumer, cyclical | 86 |  |  | 106 |
Energy | 18 |  |  | 305 |
| 146 |  |  | 468 |
Corporate debt securities | — |  |  | — |
| $ | 146 |  |  | $ | 468 |
Other Segments and Holding Company |
Schedule of Investments [Line Items] |
Investments |
| June 30, 2019 |  | December 31, 2018
| (in millions)
Equity method investments | $ | 189 |  |  | $ | 143 |
Other investments (measured at fair value) | 478 |  |  | 1,327 |
| $ | 667 |  |  | $ | 1,470 |

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