XML 86 R69.htm IDEA: XBRL DOCUMENT v3.20.4
Short Duration Contracts - Reconciliation of claims development to liability (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance $ 11,923,393      
Unpaid losses and loss adjustment expenses recoverable 4,314,855 $ 4,082,650 $ 2,814,291 $ 2,464,910
Lines other than short duration 75,369      
Discounting (23,326)      
Unallocated claims adjustment expenses 200,839      
Total reconciling items 252,882      
Reserve for losses and loss adjustment expenses 16,513,929 $ 13,891,842 $ 11,853,297 $ 11,383,792
Consolidating adjustments and eliminations        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Unpaid losses and loss adjustment expenses recoverable (718,507)      
Other short duration lines not included        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance [1] 1,765,397      
Unpaid losses and loss adjustment expenses recoverable [2] 1,090,486      
Other short duration lines not included | Loss portfolio transfer        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Unpaid losses and loss adjustment expenses recoverable [2] 153,100      
Total for short duration lines        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Unpaid losses and loss adjustment expenses recoverable 4,337,654      
Insurance | Property, energy, marine and aviation        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 492,588      
Unpaid losses and loss adjustment expenses recoverable 331,817      
Insurance | Third party occurrence business        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 2,558,285      
Unpaid losses and loss adjustment expenses recoverable 1,272,034      
Insurance | Third party claims-made business        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 1,377,179      
Unpaid losses and loss adjustment expenses recoverable 808,238      
Insurance | Multi-line and other specialty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 1,273,791      
Unpaid losses and loss adjustment expenses recoverable 246,915      
Reinsurance | Casualty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 1,885,107      
Unpaid losses and loss adjustment expenses recoverable 536,809      
Reinsurance | Property catastrophe        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 276,172      
Unpaid losses and loss adjustment expenses recoverable 266,946      
Reinsurance | Property excluding property catastrophe        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 581,072      
Unpaid losses and loss adjustment expenses recoverable 70,108      
Reinsurance | Marine and aviation        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 183,362      
Unpaid losses and loss adjustment expenses recoverable 63,781      
Reinsurance | Other specialty        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 906,995      
Unpaid losses and loss adjustment expenses recoverable 317,011      
Mortgage        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance 623,445      
Unpaid losses and loss adjustment expenses recoverable 52,016      
Other | Other short duration lines not included        
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for losses and loss adjustment expenses, net of reinsurance [1] $ 1,200,000      
[1] Includes net outstanding liabilities of $1.2 billion for the ‘other’ segment
[2] Includes unpaid loss and loss adjustment expenses recoverable of $153.1 million related to the loss portfolio transfer reinsurance agreement