Statutory Financial Data and Restrictions - Schedule of statutory financial data and restrictions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Statutory Accounting Practices [Line Items] | |||
| Statutory net income (loss) | $ 1,158 | $ 1,643 | $ 3,303 |
| Statutory capital and surplus | 13,713 | 13,477 | |
| Aggregate minimum required statutory capital and surplus | 4,330 | 4,159 | |
| Domestic | |||
| Statutory Accounting Practices [Line Items] | |||
| Statutory net income (loss) | 1,158 | 1,643 | 3,354 |
| Statutory capital and surplus | 13,713 | 13,477 | |
| Aggregate minimum required statutory capital and surplus | 4,330 | 4,159 | |
| Foreign | |||
| Statutory Accounting Practices [Line Items] | |||
| Statutory net income (loss) | 0 | 0 | $ (51) |
| Statutory capital and surplus | 0 | 0 | |
| Aggregate minimum required statutory capital and surplus | $ 0 | $ 0 | |