v3.26.3
Investments - Schedule of Mortgage Loans Amortized Cost by Debt Service Coverage Ratio Distribution and Year of Origination (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost, net $ 1,040 $ 879
Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost, net 671 619
Mortgage loans    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 1,052 889
Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 680 628
Allowance (9) (9)
Amortized cost, net 671 619
Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 143 71
Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 50 95
Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 487 $ 462
2021 and prior | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 381  
2021 and prior | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 19  
2021 and prior | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 4  
2021 and prior | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 358  
2022 | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 47  
2022 | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2022 | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2022 | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 47  
2023 and prior | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 57  
2023 and prior | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2023 and prior | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 9  
2023 and prior | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 48  
2024 | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 53  
2024 | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 38  
2024 | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2024 | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 15  
2025 | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 48  
2025 | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 48  
2025 | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2025 | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 0  
2026 | Mortgage loans | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 94  
2026 | Mortgage loans | 1.0 - 1.25 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 38  
2026 | Mortgage loans | 1.26 - 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance 37  
2026 | Mortgage loans | Above 1.50 | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Amortized cost before allowance $ 19