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v3.22.1

INVESTMENTS - Other Investments (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) fund | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2015 USD ($)
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 954,602 | $ 947,982 |  |
Percentage of total fair value (as a percent) | 100.00% | 100.00% |  |
Long/short equity funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 3,056 | $ 3,476 |  |
Percentage of total fair value (as a percent) | 0.00% | 0.00% |  |
Redemption notice period | 60 days | 60 days |  |
Multi-strategy funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 48,561 | $ 56,012 |  |
Percentage of total fair value (as a percent) | 5.00% | 6.00% |  |
Multi-strategy funds | Minimum |  |  |  |
Other Investments [Line Items] |  |  |  |
Redemption notice period | 60 days | 60 days |  |
Multi-strategy funds | Maximum |  |  |  |
Other Investments [Line Items] |  |  |  |
Redemption notice period | 90 days | 90 days |  |
Multi-strategy funds | Other Redemption Restriction |  |  |  |
Other Investments [Line Items] |  |  |  |
Unfunded commitments related to other investments | $ 26,000 |  | $ 23,000 |
Multi-strategy funds | Other Redemption Restriction | Minimum |  |  |  |
Other Investments [Line Items] |  |  |  |
Investment term | 2 years |  |  |
Direct lending funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 276,211 | $ 289,867 |  |
Percentage of total fair value (as a percent) | 29.00% | 31.00% |  |
Redemption notice period | 90 days | 90 days |  |
Direct lending funds | Other Redemption Restriction |  |  |  |
Other Investments [Line Items] |  |  |  |
Unfunded commitments related to other investments | $ 203,000 |  | 224,000 |
Optional extension of investment term | 3 years |  |  |
Direct lending funds | Other Redemption Restriction | Minimum |  |  |  |
Other Investments [Line Items] |  |  |  |
Investment term | 4 years |  |  |
Direct lending funds | Other Redemption Restriction | Maximum |  |  |  |
Other Investments [Line Items] |  |  |  |
Investment term | 10 years |  |  |
Direct lending funds | Quarterly Redemption |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 48,000 |  | 47,000 |
Number of funds | fund | 1 |  |  |
Private equity funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 260,596 | $ 249,974 |  |
Percentage of total fair value (as a percent) | 27.00% | 26.00% |  |
Private equity funds | Other Redemption Restriction |  |  |  |
Other Investments [Line Items] |  |  |  |
Unfunded commitments related to other investments | $ 187,000 | $ 178,000 |  |
Investment term | 5 years |  |  |
Real estate funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 245,823 | $ 238,222 |  |
Percentage of total fair value (as a percent) | 26.00% | 25.00% |  |
Redemption notice period |  | 45 days |  |
Real estate funds | Minimum |  |  |  |
Other Investments [Line Items] |  |  |  |
Redemption notice period | 45 days |  |  |
Real estate funds | Maximum |  |  |  |
Other Investments [Line Items] |  |  |  |
Redemption notice period | 90 days |  |  |
Real estate funds | Other Redemption Restriction |  |  |  |
Other Investments [Line Items] |  |  |  |
Unfunded commitments related to other investments | $ 198,000 | $ 173,000 |  |
Real estate funds | Other Redemption Restriction | Minimum |  |  |  |
Other Investments [Line Items] |  |  |  |
Investment term | 2 years |  |  |
Real estate funds | Quarterly Or Annual Redemption |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 76,000 |  | 73,000 |
Number of funds | fund | 2 |  |  |
CLO-Equities |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 4,881 | $ 5,910 |  |
Percentage of total fair value (as a percent) | 1.00% | 1.00% |  |
Other privately held investments |  |  |  |
Other Investments [Line Items] |  |  |  |
Other investments, at fair value | $ 115,474 | $ 104,521 |  |
Percentage of total fair value (as a percent) | 12.00% | 11.00% |  |
Hedge funds | Lockup Redemption Restriction |  |  |  |
Other Investments [Line Items] |  |  |  |
Fair value of other investments subject to redemption restrictions | $ 0 |  | $ 3,000 |
Bank Revolver Opportunity Funds |  |  |  |
Other Investments [Line Items] |  |  |  |
Unfunded commitments related to other investments |  |  |  | $ 50,000
Investment term | 7 years |  |  |
Optional extension of investment term | 2 years |  |  |

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