v3.25.1
Fair value of assets and liabilities - Movements in Level 3 Financial Assets and Liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period $ 5,410,483 $ 5,290,963
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 505,324 238,374
Realizations $ (658,124) $ (360,532)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Revenues Revenues
Income/(loss) for the period $ 129,563 $ 47,286
Foreign exchange gains/(losses) 7,901 (4,715)
End of period 5,395,147 5,211,376
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 747,053 704,196
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 12,479 6
Realizations $ 0 $ 0
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Revenues Revenues
Income/(loss) for the period $ 20,796 $ 5,224
Foreign exchange gains/(losses) 2 0
End of period 780,330 709,426
Single case    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 1,052,519 934,131
Transfers into Level 3 0 0
Transfers between types (286,474) 0
Deployments 62,060 33,534
Realizations (97,636) (39,186)
Income/(loss) for the period 23,240 6,336
Foreign exchange gains/(losses) 2,733 (1,677)
End of period 756,442 933,138
Portfolio    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 3,053,800 2,875,881
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 27,969 24,695
Realizations (49,548) (18,925)
Income/(loss) for the period 65,763 16,600
Foreign exchange gains/(losses) 1,864 (2,122)
End of period 3,099,848 2,896,129
Portfolio with equity risk    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 65,041 142,659
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 89 90
Realizations 0 0
Income/(loss) for the period 9,092 18,433
Foreign exchange gains/(losses) 0 0
End of period 74,222 161,182
Legal risk management    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 6,442 3,523
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 0 0
Realizations 0 0
Income/(loss) for the period 477 2,374
Foreign exchange gains/(losses) 278 (75)
End of period 7,197 5,822
Joint ventures and equity method investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 154,220 178,628
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 0 0
Realizations (585) (488)
Income/(loss) for the period 1,142 (17,046)
Foreign exchange gains/(losses) 2,658 (777)
End of period 157,435 160,317
Core legal finance (BOF-C)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 705,315 705,092
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 10,550 16,471
Realizations (53,592) (45,594)
Income/(loss) for the period 16,804 11,097
Foreign exchange gains/(losses) 24 0
End of period 679,101 687,066
Core legal finance (EP Funds)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 0  
Transfers into Level 3 0  
Transfers between types 286,474  
Deployments 115,301  
Realizations 0  
Income/(loss) for the period 8,429  
Foreign exchange gains/(losses) 0  
End of period 410,204  
Lower risk legal finance (Advantage Fund)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 189,288 185,509
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 507 50,613
Realizations (85,709) (8,778)
Income/(loss) for the period 3,964 8,690
Foreign exchange gains/(losses) 0 0
End of period 108,050 236,034
Total capital provision assets    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 5,226,625 5,025,423
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 216,476 125,403
Realizations (287,070) (112,971)
Income/(loss) for the period 128,911 46,484
Foreign exchange gains/(losses) 7,557 (4,651)
End of period 5,292,499 5,079,688
Due from settlement of capital provision assets    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 183,858 265,540
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 288,848 112,971
Realizations (371,054) (247,561)
Income/(loss) for the period 652 802
Foreign exchange gains/(losses) 344 (64)
End of period 102,648 131,688
Financial liabilities relating to third-party interests in capital provision assets    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning of period 747,053 704,196
Transfers into Level 3 0 0
Transfers between types 0 0
Deployments 12,479 6
Realizations 0 0
Income/(loss) for the period 20,796 5,224
Foreign exchange gains/(losses) 2 0
End of period 780,330 $ 709,426
Core legal finance (EP Funds), third party interests    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Deployments $ 80,000