v3.25.3
Investments - Schedule of Mortgage Loan Portfolio, with Fair Value Option Loans (Details) - Mortgage loans - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Option, Quantitative Disclosures [Line Items]    
Unpaid principal balance $ 86,487 $ 69,754
Mark to fair value (1,141) (2,639)
Fair value 85,346 67,115
Mortgage loans 85,346 67,115
Commercial mortgage loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Unpaid principal balance 39,169 34,531
Mark to fair value (1,730) (2,099)
Fair value 37,439 32,432
Residential mortgage loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Unpaid principal balance 47,318 35,223
Mark to fair value 589 (540)
Fair value 47,907 34,683
Commercial mortgage loans | Commercial mortgage loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Unpaid principal balance 37,138 32,544
Commercial mortgage loans under development | Commercial mortgage loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Unpaid principal balance $ 2,031 $ 1,987