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v3.25.1

VARIABLE INTEREST ENTITIES (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) account | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Variable Interest Entity [Line Items] |  |  |  |
Number of segregated accounts | account | 4 |  |  |
Assets | $ 53,633,383 |  | $ 50,707,550 |
Liabilities | 36,594,707 |  | 33,155,789 |
Investments in other ventures, under equity method | 101,227 |  | 102,770 |
Redeemable noncontrolling interests | 6,690,173 |  | 6,977,749 |
Ceded premiums written | 711,974 | $ 791,111 |  |
Ceded premiums earned | 386,440 | 433,030 |  |
Vermeer |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Redeemable noncontrolling interests | 1,692,777 | 1,433,268 | 1,799,857 | $ 1,555,297
Fontana |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Redeemable noncontrolling interests | 535,656 | 451,397 | 469,439 | $ 353,823
Variable Interest Entity, Primary Beneficiary | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 1,500,000 |  | 2,400,000 |
Liabilities | 1,500,000 |  | 2,400,000 |
Net assets | 47,900 |  | 60,500 |
Variable Interest Entity, Primary Beneficiary | Vermeer |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 1,900,000 |  | 1,900,000 |
Liabilities | 229,600 |  | 93,000 |
Redeemable noncontrolling interests | 1,700,000 |  | 1,800,000 |
Variable Interest Entity, Primary Beneficiary | Fontana |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 2,400,000 |  | 2,200,000 |
Liabilities | 1,700,000 |  | 1,600,000 |
Redeemable noncontrolling interests | 535,700 |  | 469,400 |
Variable Interest Entity, Primary Beneficiary | Investors Of Upsilon RFO Diversified I, II and III | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Payments of capital distribution | 25,300 | 109,300 |  |
Net assets | 320,200 |  | 282,200 |
Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Payments of capital distribution |  | $ 13,000 |  |
Variable interest entity, ownership percentage | 13.50% | 14.60% |  |
Variable Interest Entity, Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Payments of capital distribution | $ 15,100 |  |  |
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investments in other ventures, under equity method | 500 |  | 500 |
Variable Interest Entity, Not Primary Beneficiary | NOC1 |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investments in other ventures, under equity method | 1,700 |  | 1,700 |
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investments in other ventures, under equity method | 3,500 |  | 3,600 |
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 354,500 |  | 440,600 |
Liabilities | 37,300 |  | 140,900 |
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investment owned, fair value | 325,700 |  | 304,000 |
Variable Interest Entity, Not Primary Beneficiary | NOC1 |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 175,400 |  | 173,400 |
Liabilities | 1,100 |  | 2,200 |
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 992,300 |  | 936,100 |
Liabilities | 992,300 |  | 936,100 |
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | Term Loans |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investment in participating notes | 5,300 |  | 7,000 |
Variable Interest Entity, Not Primary Beneficiary | Tailwind Re Ltd |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 86,100 |  | 416,800 |
Liabilities | 86,100 |  | 416,800 |
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Assets | 2,100,000 |  | 3,000,000 |
Liabilities | 1,100,000 |  | 1,300,000 |
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Tailwind Re Ltd |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Ceded premiums written |  | $ 42,700 |  |
Ceded premiums earned |  | 10,600 |  |
Variable Interest Entity, Not Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd. |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Net assets | 107,000 |  | $ 88,300 |
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Payments of capital distribution | 24,200 | 90,000 |  |
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | NOC1 | Preference shares |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Investment in variable interest entity |  | 20,000 |  |
Variable Interest Entity, Not Primary Beneficiary | Renaissance Reinsurance Ltd. | Mona Lisa Re |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Ceded premiums written | 44,500 | 18,900 |  |
Ceded premiums earned | 17,400 | 8,300 |  |
Variable Interest Entity, Not Primary Beneficiary | DaVinci Reinsurance Ltd. | Mona Lisa Re |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Ceded premiums written | 11,200 | 4,700 |  |
Ceded premiums earned | $ 4,400 | $ 2,100 |  |

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