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Segments - Schedule of Operating Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 31,974	$ 27,771	$ 19,423
Medicaid
Segment Reporting Information [Line Items]
Revenues	25,783	21,231	15,217
Medicare
Segment Reporting Information [Line Items]
Revenues	3,824	3,379	2,529
Marketplace Segment
Segment Reporting Information [Line Items]
Revenues	2,296	3,091	1,677
Other
Segment Reporting Information [Line Items]
Revenues	$ 71	$ 70	$ 0

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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