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SEGMENT INFORMATION - Schedule of Segment Results (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
External revenues |  |  |  |
Premiums revenue | $ 30,711 | $ 27,951 | $ 91,941 | $ 84,354
Services revenue | 1,600 | 1,103 | 4,334 | 3,265
Total revenues | 32,649 | 29,397 | 97,149 | 88,548
Investment income | 338 | 343 | 874 | 929
Operating expenses: |  |  |  |
Benefits | 27,991 | 25,120 | 82,091 | 75,283
Operating costs | 4,085 | 3,339 | 11,012 | 9,529
Depreciation and amortization | 173 | 210 | 534 | 631
Total operating expenses | 32,249 | 28,669 | 93,637 | 85,443
Income (loss) from operations | 400 | 728 | 3,512 | 3,105
Product |  |  |  |
External revenues |  |  |  |
Premiums revenue | 30,711 | 27,951 | 91,941 | 84,354
Service |  |  |  |
External revenues |  |  |  |
Services revenue | 1,600 | 1,103 | 4,334 | 3,265
External Revenues |  |  |  |
External revenues |  |  |  |
Total revenues | 32,311 | 29,054 | 96,275 | 87,619
Operating Segments | Insurance |  |  |  |
External revenues |  |  |  |
Total revenues | 31,189 | 28,370 | 93,220 | 85,594
Investment income | 210 | 192 | 551 | 522
Operating expenses: |  |  |  |
Benefits | 27,982 | 25,319 | 82,278 | 75,752
Operating costs | 2,808 | 2,595 | 7,900 | 7,354
Depreciation and amortization | 148 | 182 | 451 | 553
Total operating expenses | 30,938 | 28,096 | 90,629 | 83,659
Income (loss) from operations | 251 | 274 | 2,591 | 1,935
Operating Segments | CenterWell |  |  |  |
External revenues |  |  |  |
Total revenues | 5,879 | 5,041 | 16,511 | 14,806
Investment income | 0 | 0 | 0 | 0
Operating expenses: |  |  |  |
Benefits | 0 | 0 | 0 | 0
Operating costs | 5,521 | 4,602 | 15,298 | 13,638
Depreciation and amortization | 53 | 57 | 172 | 166
Total operating expenses | 5,574 | 4,659 | 15,470 | 13,804
Income (loss) from operations | 305 | 382 | 1,041 | 1,002
Operating Segments | Product | Insurance |  |  |  |
External revenues |  |  |  |
Premiums revenue | 30,711 | 27,951 | 91,941 | 84,354
Operating Segments | Product | CenterWell |  |  |  |
External revenues |  |  |  |
Premiums revenue | 0 | 0 | 0 | 0
Operating Segments | Service | Insurance |  |  |  |
External revenues |  |  |  |
Services revenue | 267 | 226 | 725 | 715
Operating Segments | Service | CenterWell |  |  |  |
External revenues |  |  |  |
Services revenue | 1,333 | 877 | 3,609 | 2,550
Operating Segments | External Revenues | Insurance |  |  |  |
External revenues |  |  |  |
Total revenues | 30,978 | 28,177 | 92,666 | 85,069
Operating Segments | External Revenues | CenterWell |  |  |  |
External revenues |  |  |  |
Total revenues | 1,333 | 877 | 3,609 | 2,550
Eliminations/ Corporate |  |  |  |
External revenues |  |  |  |
Total revenues | (4,419) | (4,014) | (12,582) | (11,852)
Investment income | 128 | 151 | 323 | 407
Operating expenses: |  |  |  |
Benefits | 9 | (199) | (187) | (469)
Operating costs | (4,244) | (3,858) | (12,186) | (11,463)
Depreciation and amortization | (28) | (29) | (89) | (88)
Total operating expenses | (4,263) | (4,086) | (12,462) | (12,020)
Income (loss) from operations | (156) | 72 | (120) | 168
Eliminations/ Corporate | Insurance |  |  |  |
External revenues |  |  |  |
Total revenues | 1 | 1 | 3 | 3
Eliminations/ Corporate | CenterWell |  |  |  |
External revenues |  |  |  |
Total revenues | 4,546 | 4,164 | 12,902 | 12,256
Intersegment Eliminations |  |  |  |
External revenues |  |  |  |
Total revenues | $ (4,547) | $ (4,165) | $ (12,905) | $ (12,259)

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