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 $ 84,214 $ 85,751
Mortgage Loans in Process of Foreclosure, Amount 197 186
Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year 1,488  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,645  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,013  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 737  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,147  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 8,459  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 18,489 16,800
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 $ 1,487  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,607  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,940  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 685  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,055  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 8,178  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 17,952  
Loans Receivable Residential Mortgage Percentage 97.10%  
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 38  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 73  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 52  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 92  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 281  
Financing Receivable, Revolving 0  
Mortgage Loans, Gross $ 537  
Loans Receivable Residential Mortgage Percentage 2.90%  
Agricultural Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing Receivable, Year One, Originated, Current Fiscal Year $ 1,138  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,419  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 738  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,246  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,570  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 11,279  
Financing Receivable, Revolving 1,387  
Mortgage Loans, Gross $ 19,777 $ 19,551
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 $ 1,120  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,300  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 679  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,169  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,118  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 10,485  
Financing Receivable, Revolving 1,316  
Mortgage Loans, Gross $ 18,187  
Loans Receivable Agricultural Mortgage Percentage 92.00%  
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 119  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 47  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 77  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 284  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 761  
Financing Receivable, Revolving 57  
Mortgage Loans, Gross $ 1,345  
Loans Receivable Agricultural Mortgage Percentage 6.80%  
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 12  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 146  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 22  
Financing Receivable, Revolving 10  
Mortgage Loans, Gross $ 208  
Loans Receivable Agricultural Mortgage Percentage 1.00%