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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2019
Derivative [Line Items] |
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location |
| Asset Derivatives(1) |  |  |  | Liability Derivatives |  |
| December 31, 2019 |  | December 31, 2018 |  | December 31, 2019 |  | December 31, 2018
| (in millions) |  |  |  |  |  |
Equity contracts | $ | 291 |  |  | $ | 568 |  |  | $ | 1,058 |  |  | $ | 170 |
Credit contracts | — |  |  | 76 |  |  | 266 |  |  | — |
Commodity contracts | — |  |  | 7 |  |  | — |  |  | — |
Sub-total | 291 |  |  | 651 |  |  | 1,324 |  |  | 170 |
Netting across contract types(2) | (109) |  |  | (134) |  |  | (109) |  |  | (134) |
Total(2) | $ | 182 |  |  | $ | 517 |  |  | $ | 1,215 |  |  | $ | 36 |
(1)Net asset derivatives are classified within other assets in our consolidated balance sheets. (2)Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2019 and December 31, 2018 was $903 million and $0 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in the consolidated balance sheets. The following table presents the amount of gain (loss) recognized in the consolidated statements of operations for our Investment segment’s derivatives not designated as hedging instruments:
|  |  |  |  | Gain (Loss) Recognized in Income(1) |  |  |  |
|  |  |  |  | Year Ended December 31, |  |  |  |
|  |  |  |  | 2019 |  | 2018 |  | 2017
|  |  |  |  | (in millions) |  |  |  |
Equity contracts |  |  |  |  | $ | (2,152) |  |  | $ | 603 |  |  | $ | (1,815) |
Credit contracts |  |  |  |  | (342) |  |  | 129 |  |  | (42) |
Commodity contracts |  |  |  |  | (8) |  |  | 66 |  |  | (112) |
|  |  |  |  | $ | (2,502) |  |  | $ | 798 |  |  | $ | (1,969) |
(1)Gains (losses) recognized on derivatives are classified in net gain (loss) from investment activities in our consolidated statements of operations for our Investment segment.
Investment Segment |
Derivative [Line Items] |
Schedule of Notional Amounts of Outstanding Derivative Positions |
| December 31, 2019 |  |  |  | December 31, 2018 |  |
| Long Notional Exposure |  | Short Notional Exposure |  | Long Notional Exposure |  | Short Notional Exposure
Primary underlying risk: | (in millions) |  |  |  |  |  |
Equity contracts | $ | 806 |  |  | $ | 13,113 |  |  | $ | 118 |  |  | $ | 8,368 |
Credit contracts(1) | — |  |  | 622 |  |  | — |  |  | 479 |
Commodity contracts | — |  |  | — |  |  | — |  |  | 114 |
(1)The short notional amount on our credit default swap positions was approximately $4.7 billion at December 31, 2019. However, because credit spreads cannot compress below zero, our downside short notional exposure to loss is $622 million as of December 31, 2019. The short notional amount on our credit default swap positions was approximately $1.8 billion as of December 31, 2018. However, because credit spreads cannot compress below zero, our downside short notional exposure to loss is $479 million as of December 31, 2018.

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