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v3.20.2

Segment Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) segment | Jun. 30, 2019 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of operating segments | segment |  |  | 2 |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 27,712 | $ 18,356 | $ 53,737 | $ 36,800
Earnings from operations | 2,018 | 643 | 2,206 | 1,328
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 27,712 |  | 53,737 |
Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | (3,120) | (2,593) | (6,034) | (5,078)
Managed Care |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 26,740 | 17,546 | 51,776 | 35,268
Earnings from operations | 1,909 | 587 | 2,126 | 1,202
Managed Care | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 26,623 | 17,509 | 51,559 | 35,196
Managed Care | Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 117 | 37 | 217 | 72
Specialty Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 4,092 | 3,403 | 7,995 | 6,610
Earnings from operations | 109 | 56 | 80 | 126
Specialty Services | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 1,089 | 847 | 2,178 | 1,604
Specialty Services | Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 3,003 | $ 2,556 | $ 5,817 | $ 5,006

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
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