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Medical Claims and Benefits Payable - Medical Claims and Benefits Payable (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
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Other Liabilities Disclosure [Abstract] |  |  |  |
Claims incurred but not paid (“IBNP”) | $ 3,239 | $ 2,901 |  |
Pharmacy payable | 229 | 202 |  |
Capitation payable | 152 | 100 |  |
Other | 951 | 1,001 |  |
Total | $ 4,571 | $ 4,204 | $ 3,824 | $ 3,528

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- Definition Capitation Claims Payable + References No definition available. + Details
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- Definition Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Paid (IBNP), Fee-for-service Claims, Amount + References No definition available. + Details
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- Definition Other Claims Payable + References No definition available. + Details
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- Definition Pharmacy Claims Payable + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-3 + Details
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- References No definition available. + Details
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