v3.26.1
Fair Value Measurements - Schedule of Fair Value Option (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair value $ 595 $ 324
Aggregate contractual principal 11,009 10,211
Mortgage loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Aggregate contractual principal $ 614 $ 330