v3.25.2
Investments - Schedule of Bank Loans Amortized Cost by Credit Rating and Year of Origination (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost, net $ 807 $ 784
Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 352 211
Allowance (17) (10)
Amortized cost, net 335 201
NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 156 45
NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 42 6
NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 27 27
NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 117 122
NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 10 $ 11
2020 and prior | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 19  
2020 and prior | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2020 and prior | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2020 and prior | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2020 and prior | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 19  
2020 and prior | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2021 | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 2  
2021 | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2021 | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2021 | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2021 | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 2  
2021 | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2022 | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 2  
2022 | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2022 | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2022 | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 1  
2022 | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2022 | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 1  
2023 | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 39  
2023 | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2023 | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 0  
2023 | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 2  
2023 | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 30  
2023 | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 7  
2024 | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 101  
2024 | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 45  
2024 | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 1  
2024 | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 13  
2024 | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 41  
2024 | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 1  
2025 | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 189  
2025 | NAIC 1 / A | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 111  
2025 | NAIC 2 / BBB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 41  
2025 | NAIC 3 / BB | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 11  
2025 | NAIC 4 / B | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance 25  
2025 | NAIC 5-6 / CCC and below | Bank loans, net    
Debt Securities, Available-for-Sale [Line Items]    
Amortized cost before allowance $ 1