v3.26.1
Fair Value - Fair Value Option (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) $ (551) $ 1,254 $ (1,533) $ 2,460  
Mortgage loans          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Unpaid principal balance 105,204   105,204   $ 96,269
Mark to fair value (1,623)   (1,623)   (725)
Fair value 103,581   103,581   95,544
Fair Value, Option, Credit Risk, Gains (Losses) on Assets (20) (20) (44) (23)  
Residential mortgage loans          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Fair value option, loans, 90 days or more past due 829   829   741
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 1,655   1,655   678
Unpaid principal balance 1,912   1,912   826
Fair value 1,728   1,728   741
Fair Value, Option, Loans Held as Assets, Aggregate Difference (184)   (184)   (85)
Residential mortgage loans | Loans Insured or Guaranteed by US Government Authorities          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Fair value option, loans, 90 days or more past due 73   73   63
Fair Value Option, Other Eligible Items          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) (2) (29) 4 (17)  
Commercial mortgage loans          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Fair value option, loans, 90 days or more past due 298   298   274
Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status 695   695   655
Unpaid principal balance 1,027   1,027   992
Fair value 695   695   655
Fair Value, Option, Loans Held as Assets, Aggregate Difference (332)   (332)   $ (337)
Income Statement Location [Axis]: us-gaap:GainLossOnInvestments | Mortgage loans          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) (624) 892 (1,375) 1,933  
Income Statement Location [Axis]: us-gaap:GainLossOnInvestments | Trading securities          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) 62 261 (190) 336  
Income Statement Location [Axis]: us-gaap:NetInvestmentIncome | Investment funds          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) 6 120 (3) 203  
Income Statement Location [Axis]: us-gaap:PolicyholderBenefitsAndClaimsIncurredNet | Future policy benefits          
Fair Value, Option, Quantitative Disclosures [Line Items]          
Total gains (losses) $ 7 $ 10 $ 31 $ 5