Fair Value Measurements - Assets and Liabilities Measured at Fair Value under Certain Conditions (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Realized investment losses on assets measured at fair value under certain conditions, after-tax | ||
| Realized investment gains on equity securities with no readily determinable fair value | ||