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Business and Basis of Presentation - Narrative (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 01, 2023 USD ($) consolidatedInvestmentVehicle | Dec. 31, 2023 USD ($) Company | Dec. 31, 2023 USD ($) consolidatedInvestmentVehicle Company
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Cash flow projection period |  |  | 6 years
Number of holding companies having outstanding public debt | Company |  | 2 | 2
Consolidated Investment Vehicles |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Number of remaining entities | consolidatedInvestmentVehicle | 3 |  | 3
Sound Point Agreement |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Assets |  | $ 4,700 | $ 4,700
Liabilities |  | 4,400 | 4,400
Disposal Group, Held-for-Sale, Not Discontinued Operations |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Assets |  | 28 | 28
Liabilities |  | $ 2 | 2
Disposal Group, Held-for-Sale, Not Discontinued Operations | Sound Point Agreement |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Consideration, equity interest, ownership percentage | 30.00% |  |
Term to make new investments | 2 years | 2 years |
Term to reinvest all returns of capital | 15 years |  |
Investment management commitment | $ 1,000 |  | 1,000
Operating expense |  |  | $ 46

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