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Managed Investment Entities - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) collateralizedloanobligation | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items] |  |  |
Percentage of investment of most subordinate debt tranche, Minimum | 15.00% |  |
Percentage of investment of most subordinate debt tranche, Maximum | 100.00% |  |
Number of collateralized loan obligation entities | collateralizedloanobligation | 11 |  |
Face amount of managed investment entities liabilities purchased by subsidiaries after issuance date | $ 57 |  |
Amount paid by subsidiaries to purchase managed investment entities liabilities after issuance date | 39 |  |
Difference between aggregate unpaid principal balance and fair value of CLOs' fixed maturity investments | 818 |  | $ 146
Difference between aggregate unpaid principal balance and carrying value of CLOs' debt | 747 |  | 129
Carrying amount of CLO loans in default | 20 |  | 10
Aggregate unpaid principal balance of variable interest entity loans in default | 50 |  | 25
Available for sale (AFS) fixed maturities | 46,134 |  | 46,505
Maximum |  |  |
Variable Interest Entity [Line Items] |  |  |
Proceeds received by subsidiaries related to sales and redemptions of managed investment entities liabilities | 1 | $ 1 |
Collateralized loan obligations | Managed by third parties |  |  |
Variable Interest Entity [Line Items] |  |  |
Available for sale (AFS) fixed maturities | 4,138 |  | 4,280
Variable interest entity, primary beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Aggregate fair value of investment in collateralized loan obligations | 161 | $ 193 | $ 165
Variable interest entity, primary beneficiary | Subordinated Debt Obligations |  |  |
Variable Interest Entity [Line Items] |  |  |
Aggregate fair value of investment in collateralized loan obligations | $ 81 |  |

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