XML 65 R54.htm IDEA: XBRL DOCUMENT v3.21.2
Reinsurance (Reinsurance Recoverable on Ceded Reinsurance) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Ceded Credit Risk [Line Items]        
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments $ 15,550 [1] $ 14,647 $ 14,767 [1] $ 14,181
Reinsurance Recoverable for Paid Claims and Claims Adjustments 1,098 945    
Reinsurance recoverable on losses and loss expenses, net of valuation allowance - $325 and $314 16,648 15,592    
Reinsurance recoverable on policy benefits 206 206    
Reinsurance Recoverables on Unpaid Losses, Allowance 269 257    
Reinsurance Recoverables on Paid Losses, Allowance 56 57    
Reinsurance Recoverable, Allowance for Credit Loss 325 314 $ 320 $ 316
Reinsurance Recoverables on Future Policy Benefits, Allowance $ 4 $ 5    
[1] Net of valuation allowance for uncollectible reinsurance.