Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details)

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Acquisitions - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Millions
Jan. 23, 2020
Mar. 31, 2020
Dec. 31, 2019
Assets acquired and liabilities assumed      
Goodwill   $ 17,417 $ 6,863
WellCare Health Plans, Inc.      
Assets acquired and liabilities assumed      
Cash and cash equivalents $ 2,899    
Premium and related receivables 3,414    
Short-term investments 403    
Other current assets 1,158    
Long-term investments 2,699    
Restricted deposits 319    
Property, software and equipment 270    
Intangible assets 7,000    
Other long-term assets 261    
Total assets acquired 18,423    
Medical claims liability 3,962    
Accounts payable and accrued expenses 3,142    
Return of premium payable 238    
Unearned revenue 223    
Long-term debt 2,055    
Deferred tax liabilities 1,537    
Other long-term liabilities 281    
Total liabilities assumed 11,438    
Total identifiable net assets 6,985    
Goodwill 10,620    
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 408    
WellCare Health Plans, Inc. | Customer relationships      
Assets acquired and liabilities assumed      
Intangible assets 5,200    
WellCare Health Plans, Inc. | Provider contracts      
Assets acquired and liabilities assumed      
Intangible assets 700    
WellCare Health Plans, Inc. | Trade names      
Assets acquired and liabilities assumed      
Intangible assets 800    
WellCare Health Plans, Inc. | Developed technologies      
Assets acquired and liabilities assumed      
Intangible assets $ 300