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Investment Information - Other investments by strategy (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule Of Other Investments [Line Items] |  |
Other investments | $ 1,644,197 | $ 1,973,550
Other investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 1,043,184 | 1,432,553
Other investments | Lending |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 405,871 | 536,345
Other investments | Investment grade fixed income |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 271,143 | 147,810
Other investments | Term loan investments |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 163,941 | 484,950
Other investments | Private equity |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 123,266 | 91,126
Other investments | Energy |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 22,627 | 81,692
Other investments | Credit related funds |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | 56,336 | 70,278
Other investments | Infrastructure |  |
Schedule Of Other Investments [Line Items] |  |
Other investments | $ 0 | $ 20,352

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