v3.26.1
Fair Value - Schedule of Fair Value Option Mortgage Loans (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]      
Mortgage loans $ (24) $ (3)  
Mortgage loans      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Unpaid principal balance 97,844   $ 96,269
Mark to fair value (1,179)   (725)
Fair value 96,665   95,544
Commercial Mortgage      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Unpaid principal balance of commercial mortgage loans 90 days or more past due and/or in non-accrual status 860   992
Mark to fair value of commercial mortgage loans 90 days or more past due and/or in non-accrual status (323)   (337)
Fair value of commercial mortgage loans 90 days or more past due and/or in non-accrual status 537   655
Fair value of commercial mortgage loans 90 days or more past due 313   274
Fair value of commercial mortgage loans in non-accrual status 537   655
Residential Mortgage Loan      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Unpaid principal balance of commercial mortgage loans 90 days or more past due and/or in non-accrual status 965   826
Mark to fair value of commercial mortgage loans 90 days or more past due and/or in non-accrual status (83)   (85)
Fair value of commercial mortgage loans 90 days or more past due and/or in non-accrual status 882   741
Fair value of commercial mortgage loans 90 days or more past due 880   741
Fair value of commercial mortgage loans in non-accrual status 801   678
Residential Mortgage Loan | Government-Guaranteed Collateral      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Fair value of commercial mortgage loans 90 days or more past due $ 81   $ 63