Future Policy Benefits - Schedule of Undiscounted and Discounted Expected Future Gross Premiums and Expected Future Benefit Payments (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Long-term care insurance | |||
| Undiscounted | |||
| Expected future gross premiums | $ 31,460 | $ 32,824 | |
| Expected future benefit payments | 114,804 | 116,322 | |
| Discounted | |||
| Expected future gross premiums | 21,784 | 22,941 | |
| Expected future benefit payments | 58,632 | 59,634 | $ 58,487 |
| Life insurance | |||
| Undiscounted | |||
| Expected future gross premiums | 8,766 | 9,129 | |
| Expected future benefit payments | 5,724 | 6,042 | |
| Discounted | |||
| Expected future gross premiums | 4,959 | 5,236 | |
| Expected future benefit payments | 4,074 | 4,354 | 4,741 |
| Fixed annuities | |||
| Undiscounted | |||
| Expected future gross premiums | 0 | 0 | |
| Expected future benefit payments | 21,333 | 21,791 | |
| Discounted | |||
| Expected future gross premiums | 0 | 0 | |
| Expected future benefit payments | $ 10,097 | $ 10,437 | $ 10,695 |