Accumulation Units (Details) - shares shares in Millions |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2026 |
Dec. 31, 2025 |
|
| Outstanding: | ||
| Beginning of period (in shares) | 46.5 | 47.8 |
| Credited for premiums (in shares) | 4.0 | 6.1 |
| Annuity, other periodic payments, withdrawals and death benefits (in shares) | (4.7) | (7.4) |
| End of period (in shares) | 45.8 | 46.5 |