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v3.20.4

Segments - Reconciliation of Gross Margin to Consolidated Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Total margin | $ 2,479 | $ 2,303 | $ 2,518
Add: Other operating revenues | 19,423 | 16,829 | 18,890
Less: Other operating expenses | (18,345) | (15,785) | (17,759)
Operating income | 1,078 | 1,044 | 1,131
Less: other expenses, net | 117 | 72 | 132
Income before income tax expense | 961 | 972 | 999
Health Plans |  |  |
Segment Reporting Information [Line Items] |  |  |
Add: Other operating revenues | 19,415 | 16,815 | 18,471
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Total margin | 0 | 0 | 43
Add: Other operating revenues | 8 | 14 | 419
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total margin | 2,479 | 2,303 | 2,518
Operating Segments | Health Plans |  |  |
Segment Reporting Information [Line Items] |  |  |
Total margin | 2,479 | 2,303 | 2,475
Operating Segments | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Total margin | 0 | 0 | 43
Other Operating |  |  |
Segment Reporting Information [Line Items] |  |  |
Add: Other operating revenues | 1,124 | 621 | 871
Less: Other operating expenses | $ (2,525) | $ (1,880) | $ (2,258)

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