SEGMENT INFORMATION - Narrative (Details) $ in Millions |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2024
USD ($)
segment
|
Mar. 31, 2023
USD ($)
|
|
| Segment Reporting [Abstract] | ||
| Number of reportable segments | segment | 2 | |
| Member co-share amounts and government subsidies | $ 3,700 | $ 4,000 |
| Depreciation and amortization classified as benefit expense | $ 32 | $ 33 |