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Medical Claims and Benefits Payable - Components of Change in Medical Claims and Benefits Payable (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Insurance Claims |  |
Medical claims and benefits payable, beginning balance | $ 3,528 | $ 3,363
Components of medical care costs related to: |  |
Current year | 14,180 | 13,746
Prior years | (271) | (311)
Total medical care costs | 13,909 | 13,435
Payments for medical care costs related to: |  |
Current year | 11,166 | 10,622
Prior years | 2,650 | 2,411
Total paid | 13,816 | 13,033
Acquired balances, net of post-acquisition adjustments |  | 7
Change in non-risk and other provider payables | 56 | 3
Medical claims and benefits payable, ending balance | 3,677 | 3,775
Medicaid |  |
Insurance Claims |  |
Medical claims and benefits payable, beginning balance | 2,815 | 2,580
Components of medical care costs related to: |  |
Current year | 11,585 | 11,059
Prior years | (241) | (243)
Total medical care costs | 11,344 | 10,816
Payments for medical care costs related to: |  |
Current year | 9,184 | 8,532
Prior years | 2,041 | 1,801
Total paid | 11,225 | 10,333
Acquired balances, net of post-acquisition adjustments |  | 7
Change in non-risk and other provider payables | 58 | 3
Medical claims and benefits payable, ending balance | 2,992 | 3,073
Medicare |  |
Insurance Claims |  |
Medical claims and benefits payable, beginning balance | 452 | 404
Components of medical care costs related to: |  |
Current year | 1,857 | 1,681
Prior years | (6) | (33)
Total medical care costs | 1,851 | 1,648
Payments for medical care costs related to: |  |
Current year | 1,430 | 1,270
Prior years | 406 | 330
Total paid | 1,836 | 1,600
Acquired balances, net of post-acquisition adjustments |  | 0
Change in non-risk and other provider payables | (2) | 0
Medical claims and benefits payable, ending balance | 465 | 452
Marketplace |  |
Insurance Claims |  |
Medical claims and benefits payable, beginning balance | 261 | 379
Components of medical care costs related to: |  |
Current year | 738 | 1,006
Prior years | (24) | (35)
Total medical care costs | 714 | 971
Payments for medical care costs related to: |  |
Current year | 552 | 820
Prior years | 203 | 280
Total paid | 755 | 1,100
Acquired balances, net of post-acquisition adjustments |  | 0
Change in non-risk and other provider payables | 0 | 0
Medical claims and benefits payable, ending balance | $ 220 | $ 250

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- Definition Liability for Unpaid Claims and Claims Adjustment Expense, Business Acquisitions, Net Of Post-Closing Adjustments + References No definition available. + Details
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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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- Definition Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-3 + Details
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