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Acquisitions - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Jan. 23, 2020 | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Assets acquired and liabilities assumed |  |  |
Goodwill |  | $ 17,434 | $ 6,863
WellCare Health Plans, Inc. |  |  |
Assets acquired and liabilities assumed |  |  |
Cash and cash equivalents | $ 2,947 |  |
Premium and related receivables | 3,437 |  |
Short-term investments | 355 |  |
Other current assets | 1,116 |  |
Long-term investments | 2,716 |  |
Restricted deposits | 320 |  |
Property, software and equipment | 259 |  |
Intangible assets | 7,000 |  |
Other long-term assets | 313 |  |
Total assets acquired | 18,463 |  |
Medical claims liability | 4,073 |  |
Accounts payable and accrued expenses | 3,100 |  |
Return of premium payable | 238 |  |
Unearned revenue | 183 |  |
Long-term debt | 2,055 |  |
Deferred tax liabilities | 1,534 |  |
Other long-term liabilities | 312 |  |
Total liabilities assumed | 11,495 |  |
Total identifiable net assets | 6,968 |  |
Goodwill | 10,637 |  |
Total assets acquired and liabilities assumed | $ 17,605 |  |
Acquired intangibles, weighted average useful life years | 13 years |  |
Debt assumed, aggregate principle | $ 1,950 |  |
Debt assumed, excess of principle | 105 |  |
Deferred tax assets | 348 |  |
WellCare Health Plans, Inc. | Purchased contract rights |  |  |
Assets acquired and liabilities assumed |  |  |
Intangible assets | 5,200 |  |
WellCare Health Plans, Inc. | Trade names |  |  |
Assets acquired and liabilities assumed |  |  |
Intangible assets | 800 |  |
WellCare Health Plans, Inc. | Provider contracts |  |  |
Assets acquired and liabilities assumed |  |  |
Intangible assets | 700 |  |
WellCare Health Plans, Inc. | Developed technologies |  |  |
Assets acquired and liabilities assumed |  |  |
Intangible assets | $ 300 |  |

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