Medical Claims and Benefits Payable - Medical Claims and Benefits Payable (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Claims incurred but not paid (“IBNP”)	$ 3,065	$ 2,901
Pharmacy payable	249	202
Capitation payable	173	100
Other	1,245	1,001
Total	$ 4,732	$ 4,204	$ 4,235	$ 3,528

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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