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Significant Accounting Policies - Amounts Due To Government Agencies (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Medicaid: |  |
Minimum MLR and profit sharing | $ 735 | $ 513
Other | 167 | 76
Medicare: |  |
Risk adjustment and Part D risk sharing | 75 | 45
Minimum MLR and profit sharing | 105 | 62
Other | 42 | 30
Marketplace: |  |
Risk adjustment | 520 | 326
Minimum MLR | 47 | 37
Other | 27 | 21
Magellan Complete Care acquisition opening balance | 0 | 143
Medical Premium Liability Due To Agency | $ 1,718 | $ 1,253

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