Affordable Care Act - Schedule of Net Receivables (Payables) for Each Program (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Affordable Care Act [Abstract] | ||
| Risk adjustment receivable | $ 2,334 | $ 1,449 |
| Risk adjustment payable | (1,353) | (2,087) |
| Minimum medical loss ratio | (32) | (294) |
| Cost sharing reduction receivable | 7 | 13 |
| Cost sharing reduction payable | $ (24) | $ (15) |