XML 73 R62.htm IDEA: XBRL DOCUMENT v3.25.3
VARIABLE INTEREST ENTITIES (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
account
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
account
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Variable Interest Entity [Line Items]          
Number of segregated accounts | account 4   4    
Assets $ 54,498,074   $ 54,498,074   $ 50,707,550
Liabilities 35,526,649   35,526,649   33,155,789
Investments in other ventures, under equity method 115,597   115,597   102,770
Ceded premiums written 265,824 $ 237,632 1,628,708 $ 1,615,727  
Ceded premiums earned 464,714 $ 474,073 1,300,284 1,342,979  
Variable Interest Entity, Primary Beneficiary | Upsilon RFO Re Ltd.          
Variable Interest Entity [Line Items]          
Assets 1,100,000   1,100,000   1,900,000
Liabilities 1,100,000   1,100,000   1,900,000
Net assets 32,400   32,400   60,500
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     230,500 190,600  
Net assets 255,900   255,900   282,200
Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd.          
Variable Interest Entity [Line Items]          
Payments of capital distribution     $ 27,900 $ 33,000  
Variable interest entity, ownership percentage     12.70% 12.60%  
Variable Interest Entity, Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd.          
Variable Interest Entity [Line Items]          
Payments of capital distribution     $ 29,500 $ 9,200  
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified          
Variable Interest Entity [Line Items]          
Investments in other ventures, under equity method 400   400   500
Variable Interest Entity, Not Primary Beneficiary | NOC1          
Variable Interest Entity [Line Items]          
Investments in other ventures, under equity method 1,900   1,900   1,700
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd          
Variable Interest Entity [Line Items]          
Investments in other ventures, under equity method 2,200   2,200   3,600
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified          
Variable Interest Entity [Line Items]          
Assets 266,500   266,500   440,600
Liabilities 33,400   33,400   140,900
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified | Upsilon RFO Re Ltd.          
Variable Interest Entity [Line Items]          
Investment owned, fair value 245,000   245,000   304,000
Variable Interest Entity, Not Primary Beneficiary | NOC1          
Variable Interest Entity [Line Items]          
Assets 188,800   188,800   173,400
Liabilities 1,300   1,300   2,200
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re          
Variable Interest Entity [Line Items]          
Assets 702,500   702,500   936,100
Liabilities 702,500   702,500   936,100
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | Term Loans          
Variable Interest Entity [Line Items]          
Investment in participating notes 4,300   4,300   7,000
Variable Interest Entity, Not Primary Beneficiary | Tailwind Re Ltd          
Variable Interest Entity [Line Items]          
Assets 100   100   416,800
Liabilities 100   100   416,800
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd          
Variable Interest Entity [Line Items]          
Assets 1,300,000   1,300,000   3,000,000
Liabilities 700,000   700,000   1,300,000
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon Diversified          
Variable Interest Entity [Line Items]          
Payments of capital distribution     300 300  
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | NOC1 | Preference shares          
Variable Interest Entity [Line Items]          
Investment in variable interest entity       200  
Redemption of shares       500  
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       28,500  
Variable Interest Entity, Not Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd.          
Variable Interest Entity [Line Items]          
Net assets $ 104,800   104,800   $ 115,900
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified          
Variable Interest Entity [Line Items]          
Payments of capital distribution     207,800 165,100  
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified | Preference shares          
Variable Interest Entity [Line Items]          
Investment in variable interest entity     17,500 16,900  
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | NOC1 | Preference shares          
Variable Interest Entity [Line Items]          
Investment in variable interest entity       20,000  
Redemption of shares       48,800  
Variable Interest Entity, Not Primary Beneficiary | Renaissance Reinsurance Ltd. | Mona Lisa Re          
Variable Interest Entity [Line Items]          
Ceded premiums written     56,200 45,700  
Ceded premiums earned     49,400 28,500  
Variable Interest Entity, Not Primary Beneficiary | DaVinci Reinsurance Ltd. | Mona Lisa Re          
Variable Interest Entity [Line Items]          
Ceded premiums written     14,100 11,400  
Ceded premiums earned     $ 12,400 $ 7,100