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v3.23.1

Segment Reporting - Reconciliation of Financial Measures of Segments to Consolidated Totals (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | $ 321,629 | $ 290,912 | $ 267,908
Net investment income (loss) | 838 | 1,199 | 798
Total revenues | 322,467 | 292,111 | 268,706
Adjusted operating income (loss) | 18,037 | 17,227 | 15,956
Depreciation and amortization | 4,224 | 4,486 | 4,441
Operating Segments | Health Care Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 90,798 | 81,457 | 74,871
Net investment income (loss) | 476 | 586 | 483
Total revenues | 91,350 | 82,119 | 75,409
Adjusted operating income (loss) | 6,338 | 5,110 | 6,135
Depreciation and amortization | 1,579 | 1,811 | 1,832
Operating Segments | Health Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 157,968 | 143,912 | 131,936
Net investment income (loss) | 0 | 0 | 0
Total revenues | 169,576 | 153,892 | 141,354
Adjusted operating income (loss) | 6,781 | 6,492 | 5,128
Depreciation and amortization | 519 | 505 | 532
Copayments | 12,600 | 11,600 | 10,900
Operating Segments | Pharmacy & Consumer Wellness |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 72,739 | 65,418 | 60,990
Net investment income (loss) | (44) | 17 | 0
Total revenues | 108,596 | 101,620 | 93,579
Adjusted operating income (loss) | 6,531 | 7,260 | 6,012
Depreciation and amortization | 1,889 | 1,955 | 1,881
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | (47,585) | (46,241) | (42,062)
Net investment income (loss) | 0 | 0 | 0
Total revenues | (47,585) | (46,241) | (42,062)
Adjusted operating income (loss) | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Intersegment Eliminations | Health Care Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 76 | 76 | 55
Intersegment Eliminations | Health Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 11,608 | 9,980 | 9,418
Intersegment Eliminations | Pharmacy & Consumer Wellness |  |  |
Segment Reporting Information [Line Items] |  |  |
Intersegment revenues | 35,901 | 36,185 | 32,589
Corporate/ Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 124 | 125 | 111
Net investment income (loss) | 406 | 596 | 315
Total revenues | 530 | 721 | 426
Adjusted operating income (loss) | (1,613) | (1,635) | (1,319)
Depreciation and amortization | $ 237 | $ 215 | $ 196

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