XML 72 R61.htm IDEA: XBRL DOCUMENT v3.24.3
VARIABLE INTEREST ENTITIES (Details)
 3 Months Ended 9 Months Ended
Jan. 10, 2023
USD ($)
note
Sep. 30, 2024
USD ($)
account
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
account
Sep. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Jun. 18, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Variable Interest Entity [Line Items]                    
Number of segregated accounts | account   4   4            
Assets   $ 52,756,410,000   $ 52,756,410,000       $ 49,007,105,000    
Liabilities   34,652,827,000   34,652,827,000       33,451,316,000    
Investments in other ventures, under equity method   137,959,000   137,959,000       112,624,000    
Redeemable noncontrolling interests   6,860,999,000   6,860,999,000       6,100,831,000    
Ceded premiums written   237,632,000 $ 197,183,000 1,615,727,000 $ 1,179,559,000          
Ceded premiums earned   474,073,000 355,443,000 1,342,979,000 1,172,055,000          
Vermeer                    
Variable Interest Entity [Line Items]                    
Redeemable noncontrolling interests   1,738,426,000 1,467,367,000 1,738,426,000 1,467,367,000 $ 1,489,892,000   1,555,297,000 $ 1,590,408,000 $ 1,490,840,000
Fontana                    
Variable Interest Entity [Line Items]                    
Redeemable noncontrolling interests   483,601,000 $ 271,719,000 483,601,000 271,719,000 $ 453,744,000   353,823,000 $ 277,886,000 $ 268,031,000
Variable Interest Entity, Primary Beneficiary | Upsilon RFO Re Ltd.                    
Variable Interest Entity [Line Items]                    
Assets   2,000,000,000.0   2,000,000,000.0       2,400,000,000    
Liabilities   2,000,000,000.0   2,000,000,000.0       2,400,000,000    
Net assets   61,700,000   61,700,000       74,200,000    
Variable Interest Entity, Primary Beneficiary | Vermeer                    
Variable Interest Entity [Line Items]                    
Assets   2,200,000,000   2,200,000,000       1,700,000,000    
Liabilities   465,600,000   465,600,000       102,700,000    
Redeemable noncontrolling interests   1,700,000,000   1,700,000,000       1,600,000,000    
Variable Interest Entity, Primary Beneficiary | Fontana                    
Variable Interest Entity [Line Items]                    
Assets   2,000,000,000.0   2,000,000,000.0       1,500,000,000    
Liabilities   1,400,000,000   1,400,000,000       1,000,000,000.0    
Redeemable noncontrolling interests   483,600,000   483,600,000       353,800,000    
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       190,600,000 630,800,000          
Net assets   434,100,000   434,100,000       500,000,000.0    
Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd.                    
Variable Interest Entity [Line Items]                    
Payments of capital distribution       $ 33,000,000.0 $ 79,500,000          
Variable interest entity, ownership percentage       12.60% 13.50%          
Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity         $ 10,200,000          
Variable Interest Entity, Primary Beneficiary | Third Party Investor | Upsilon RFO Re Ltd. | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity         39,800,000          
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified                    
Variable Interest Entity [Line Items]                    
Investments in other ventures, under equity method   700,000   $ 700,000       800,000    
Variable Interest Entity, Not Primary Beneficiary | NOC1                    
Variable Interest Entity [Line Items]                    
Investments in other ventures, under equity method   1,700,000   1,700,000       1,900,000    
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd                    
Variable Interest Entity [Line Items]                    
Investments in other ventures, under equity method   5,100,000   5,100,000       4,400,000    
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified                    
Variable Interest Entity [Line Items]                    
Assets   457,500,000   457,500,000       600,800,000    
Liabilities   20,900,000   20,900,000       108,000,000.0    
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified | Upsilon RFO Re Ltd.                    
Variable Interest Entity [Line Items]                    
Investment owned, fair value   453,900,000   453,900,000       503,100,000    
Variable Interest Entity, Not Primary Beneficiary | NOC1                    
Variable Interest Entity [Line Items]                    
Assets   165,700,000   165,700,000       194,700,000    
Liabilities   600,000   600,000       21,000,000.0    
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re                    
Variable Interest Entity [Line Items]                    
Assets   601,100,000   601,100,000       436,900,000    
Liabilities   601,100,000   601,100,000       436,900,000    
Number of notes issued | note 2                  
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | Term Loans                    
Variable Interest Entity [Line Items]                    
Investment in participating notes   4,600,000   4,600,000       2,200,000    
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | One Hundred Fifty Million Principal At Risk Variable Rate Note                    
Variable Interest Entity [Line Items]                    
Face amount             $ 150,000,000      
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | Eighty Five Million Principal At Risk Variable Rate Note                    
Variable Interest Entity [Line Items]                    
Face amount $ 85,000,000                  
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | One Hundred Million Principal At Risk Variable Rate Note                    
Variable Interest Entity [Line Items]                    
Face amount $ 100,000,000                  
Variable Interest Entity, Not Primary Beneficiary | Tailwind Re Ltd                    
Variable Interest Entity [Line Items]                    
Assets   417,400,000   417,400,000       417,100,000    
Liabilities   417,400,000   417,400,000       417,100,000    
Variable Interest Entity, Not Primary Beneficiary | Tailwind Re Ltd | Term Loans                    
Variable Interest Entity [Line Items]                    
Investment in participating notes   0   0       800,000    
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd                    
Variable Interest Entity [Line Items]                    
Assets   3,500,000,000   3,500,000,000       5,000,000,000.0    
Liabilities   1,600,000,000   1,600,000,000       2,400,000,000    
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon Diversified                    
Variable Interest Entity [Line Items]                    
Payments of capital distribution       300,000 1,000,000.0          
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon Diversified | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity         100,000          
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | NOC1 | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity       200,000            
Redemption of shares       500,000            
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Tailwind Re Ltd                    
Variable Interest Entity [Line Items]                    
Ceded premiums written       42,700,000            
Ceded premiums earned       28,500,000            
Variable Interest Entity, Not Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd.                    
Variable Interest Entity [Line Items]                    
Net assets   $ 113,800,000   113,800,000       $ 88,300,000    
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified                    
Variable Interest Entity [Line Items]                    
Payments of capital distribution       165,100,000 543,300,000          
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity       16,900,000 30,000,000.0          
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | NOC1 | Preference shares                    
Variable Interest Entity [Line Items]                    
Investment in variable interest entity       20,000,000.0            
Redemption of shares       48,800,000            
Variable Interest Entity, Not Primary Beneficiary | Renaissance Reinsurance Ltd. | Mona Lisa Re                    
Variable Interest Entity [Line Items]                    
Ceded premiums written       45,700,000 32,800,000          
Ceded premiums earned       28,500,000 24,400,000          
Variable Interest Entity, Not Primary Beneficiary | DaVinci Reinsurance Ltd. | Mona Lisa Re                    
Variable Interest Entity [Line Items]                    
Ceded premiums written       11,400,000 8,200,000          
Ceded premiums earned       $ 7,100,000 $ 6,100,000