v3.24.2.u1
Lending Activities - Credit quality performance indicators for commercial mortgages (Details)
$ in Millions
Jun. 30, 2024
USD ($)
loan
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
loan
Jun. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]            
Total $ 49,421   $ 47,565      
Allowance for credit losses $ 758 $ 714 $ 698 $ 689 $ 659 $ 600
Commercial Mortgages            
Financing Receivable, Credit Quality Indicator [Line Items]            
Number of Loans | loan 592   601      
Total $ 34,686   $ 34,172      
Allowance for credit losses $ 654 $ 634 $ 614 $ 621 $ 586 $ 531
Percent of Total 100.00%   100.00%      
Percentage of total, allowance for credit losses 2.00%   2.00%      
Commercial Mortgages | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Number of Loans | loan 588   600      
Total $ 34,315   $ 34,154      
Percent of Total 99.00%   100.00%      
Commercial Mortgages | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Number of Loans | loan 1   1      
Total $ 112   $ 18      
Percent of Total 0.00%   0.00%      
Commercial Mortgages | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Number of Loans | loan 3   0      
Total $ 259   $ 0      
Percent of Total 1.00%   0.00%      
Commercial Mortgages | Apartments            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total $ 14,114   $ 13,861      
Allowance for credit losses 68   85      
Commercial Mortgages | Apartments | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 14,114   13,861      
Commercial Mortgages | Apartments | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Apartments | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Offices            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 8,490   8,486      
Allowance for credit losses 383   340      
Commercial Mortgages | Offices | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 8,299   8,468      
Commercial Mortgages | Offices | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 112   18      
Commercial Mortgages | Offices | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 79   0      
Commercial Mortgages | Offices | >90 days delinquent or in process of foreclosure | Fortitude RE Funds Withheld Assets            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 61          
Commercial Mortgages | Retail            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 3,903   3,787      
Allowance for credit losses 96   74      
Commercial Mortgages | Retail | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 3,723   3,787      
Commercial Mortgages | Retail | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Retail | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 180   0      
Commercial Mortgages | Retail | >90 days delinquent or in process of foreclosure | Fortitude RE Funds Withheld Assets            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 20          
Commercial Mortgages | Industrial            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 5,963   5,908      
Allowance for credit losses 71   83      
Commercial Mortgages | Industrial | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 5,963   5,908      
Commercial Mortgages | Industrial | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Industrial | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Hotel            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 1,785   1,805      
Allowance for credit losses 31   27      
Commercial Mortgages | Hotel | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 1,785   1,805      
Commercial Mortgages | Hotel | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Hotel | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Others            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 431   325      
Allowance for credit losses 5   5      
Commercial Mortgages | Others | In good standing            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 431   325      
Commercial Mortgages | Others | 90 days or less delinquent            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total 0   0      
Commercial Mortgages | Others | >90 days delinquent or in process of foreclosure            
Financing Receivable, Credit Quality Indicator [Line Items]            
Total $ 0   $ 0