XML 177 R117.htm IDEA: XBRL DOCUMENT v3.22.4
Reserve for Unpaid Losses and Loss Adjustment Expenses - PC Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended 72 Months Ended
May 23, 2019
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2017
Dec. 31, 2022
Dec. 31, 2019
Liability for Claims and Claims Adjustment Expense [Line Items]              
Benefits, losses and loss adjustment expenses   $ 13,142 $ 12,729 $ 11,805      
Unpaid losses and loss adjustment expenses   41,243 39,659     $ 41,243  
Asbestos and Environmental              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Liability for Asbestos and Environmental Claims, Gross, Period Increase (Decrease)   229 155 218      
Prior accident year development [1]       218      
Change in Deferred Gain on Retroactive Reinsurance   229 155 210      
Adverse development from comprehensive annual review       220   1,244  
Net asbestos reserves              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Prior accident year development [1]   162 106 127      
Net environmental reserves              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Prior accident year development [1]   67 49 91      
Reinsurance Policy, Type [Axis]: Adverse Development Cover Navigators Group              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Change in Deferred Gain on Retroactive Reinsurance   0 91 102      
Adverse development from comprehensive annual review   300          
Reinsurance premium $ 91            
Deferred Revenue   209       209  
Reinsurance Policy, Type [Axis]: Asbestos and Environmental              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Adverse development from comprehensive annual review       220      
Benefits, losses and loss adjustment expenses       2      
Reinsurance Policy, Type [Axis]: Asbestos and Environmental | Asbestos and Environmental              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Adverse development from comprehensive annual review   1,244          
Reinsurance premium         $ 650    
Deferred Revenue   594       594  
Liability | Abuse Claims [Member]              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Prior accident year development [1]       254      
Unpaid losses and loss adjustment expenses   787       787  
Liability | Reinsurance Policy, Type [Axis]: Adverse Development Cover Navigators Group              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Adverse development from comprehensive annual review   105          
Property and Casualty Insurance Subsidiaries              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Prior accident year development [1]   36 199 (136)      
Adverse development from comprehensive annual review   1,338 1,243 1,156      
Unpaid losses and loss adjustment expenses   33,083 31,449 29,622   $ 33,083 $ 28,261
Property and Casualty Insurance Subsidiaries | Reinsurance Policy, Type [Axis]: Adverse Development Cover Navigators Group              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Change in Deferred Gain on Retroactive Reinsurance   229 $ 246 $ 312      
Automobile | Reinsurance Policy, Type [Axis]: Adverse Development Cover Navigators Group | P&C Commercial Lines              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Adverse development from comprehensive annual review   $ 14          
Maximum | Property and Casualty Insurance Subsidiaries              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Weighted average discount rate   14.03% 14.03% 14.03%   14.03%  
Minimum [Member] | Property and Casualty Insurance Subsidiaries              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Weighted average discount rate   0.83% 0.83% 0.83%   0.83%  
PG&E [Member]              
Liability for Claims and Claims Adjustment Expense [Line Items]              
Former Gain Contingency, Recognized in Current Period       $ 289