Investments (Net Unrealized Investment Gains (Losses)) (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Components of net unrealized investment gains (losses) included in accumulated other comprehensive loss | ||
| Fixed maturity securities | $ (5,814) | $ (4,885) |
| Derivatives | 317 | 219 |
| Other | (8) | (8) |
| Subtotal | (5,505) | (4,674) |
| Amounts allocated from: Future policy benefits | 578 | 571 |
| Deferred income tax benefit (expense) | 1,035 | 862 |
| Net unrealized investment gains (losses) | $ (3,892) | $ (3,241) |