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v3.21.2

Segment Reporting - Reconciliation of Financial Measures of Segments to Consolidated Totals (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenue, Major Customer [Line Items] |  |  |  |
Revenues from external customers | $ 73,548 | $ 66,852 | $ 214,675 | $ 198,602
Net investment income (loss) | 246 | 204 | 832 | 550
Total revenues | 73,794 | 67,056 | 215,507 | 199,152
Adjusted operating income (loss) | 4,073 | 3,622 | 13,165 | 13,063
Health Care Benefits |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 20,479 | 18,698 | 61,487 | 56,364
Pharmacy Services |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 39,046 | 35,711 | 113,681 | 105,583
Retail/ LTC |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Total revenues | 24,992 | 22,725 | 72,994 | 67,136
Operating Segments | Health Care Benefits |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues from external customers | 20,311 | 18,557 | 60,993 | 55,972
Net investment income (loss) | 147 | 121 | 432 | 341
Total revenues | 20,479 | 18,698 | 61,487 | 56,364
Adjusted operating income (loss) | 1,106 | 1,080 | 4,502 | 6,035
Operating Segments | Pharmacy Services |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues from external customers | 36,851 | 33,492 | 105,909 | 98,233
Net investment income (loss) | 0 | 0 | 0 | 0
Total revenues | 39,046 | 35,711 | 113,681 | 105,583
Adjusted operating income (loss) | 1,773 | 1,619 | 5,035 | 4,127
Copayments | 2,800 | 2,500 | 9,000 | 8,500
Operating Segments | Retail/ LTC |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues from external customers | 16,347 | 14,770 | 47,672 | 44,314
Net investment income (loss) | (33) | 0 | 13 | 0
Total revenues | 24,992 | 22,725 | 72,994 | 67,136
Adjusted operating income (loss) | 1,723 | 1,412 | 5,166 | 4,371
Intersegment Eliminations |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues | (10,894) | (10,194) | (33,143) | (30,223)
Net investment income (loss) | 0 | 0 | 0 | 0
Total revenues | (10,894) | (10,194) | (33,143) | (30,223)
Adjusted operating income (loss) | (186) | (186) | (523) | (539)
Intersegment Eliminations | Health Care Benefits |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues | 21 | 20 | 62 | 51
Intersegment Eliminations | Pharmacy Services |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues | 2,195 | 2,219 | 7,772 | 7,350
Intersegment Eliminations | Retail/ LTC |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues | 8,678 | 7,955 | 25,309 | 22,822
Corporate/ Other |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues from external customers | 39 | 33 | 101 | 83
Net investment income (loss) | 132 | 83 | 387 | 209
Total revenues | 171 | 116 | 488 | 292
Adjusted operating income (loss) | $ (343) | $ (303) | $ (1,015) | $ (931)

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