Affordable Care Act - Net Receivables (Payables) for Each of the Ongoing Programs (Details) - USD ($) $ in Millions |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Affordable Care Act [Abstract] | ||
| Risk adjustment receivable | $ 1,805 | $ 893 |
| Risk adjustment payable | (1,705) | (2,553) |
| Minimum medical loss ratio | (586) | (164) |
| Cost sharing reduction receivable | 10 | 0 |
| Cost sharing reduction payable | $ (68) | $ (114) |