v3.26.1
Investments (Credit Quality of Agricultural and Residential Mortgage Loans) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Mortgage Loans, Gross $ 55,655 $ 56,564
Mortgage Loans in Process of Foreclosure, Amount 151 143
Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 913  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,155  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,232  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 237  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,555  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 6,804  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 12,896 11,815
Loans Receivable Residential Mortgage Percentage 100.00%  
Residential Mortgage Loans | Performing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 912  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,128  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,184  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 217  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,487  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 6,601  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 12,529  
Loans Receivable Residential Mortgage Percentage 97.20%  
Residential Mortgage Loans | Nonperforming    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 1  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 27  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 48  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 20  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 68  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 203  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 367  
Loans Receivable Residential Mortgage Percentage 2.80%  
Agricultural Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 839  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 966  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 532  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 818  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,815  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 8,968  
Financing Receivable, Revolving 1,269  
Mortgage Loans, Gross $ 15,207 $ 15,203
Loans Receivable Agricultural Mortgage Percentage 100.00%  
Agricultural Mortgage Loans | Less than 65%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 821  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 908  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 500  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 745  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,520  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 8,249  
Financing Receivable, Revolving 1,198  
Mortgage Loans, Gross $ 13,941  
Loans Receivable Agricultural Mortgage Percentage 91.70%  
Agricultural Mortgage Loans | 65% to 75%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 58  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 32  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 73  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 186  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 686  
Financing Receivable, Revolving 57  
Mortgage Loans, Gross $ 1,092  
Loans Receivable Agricultural Mortgage Percentage 7.20%  
Agricultural Mortgage Loans | 76% to 80%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 22  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 11  
Financing Receivable, Revolving 4  
Mortgage Loans, Gross $ 37  
Loans Receivable Agricultural Mortgage Percentage 0.20%  
Agricultural Mortgage Loans | Greater than 80%    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 18  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 87  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 22  
Financing Receivable, Revolving 10  
Mortgage Loans, Gross $ 137  
Loans Receivable Agricultural Mortgage Percentage 0.90%