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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Segment Reporting Information [Line Items] |  |  |  |
Premiums | $ 25,495 | $ 22,266 | $ 51,045 | $ 44,969
Services revenue | 978 | 1,349 | 1,977 | 2,613
Total revenues | 26,747 | 23,662 | 53,489 | 47,632
Investment income (loss) | 274 | 47 | 467 | 50
Benefits | 22,009 | 19,099 | 43,867 | 38,724
Operating costs | 3,111 | 3,173 | 6,090 | 6,059
Depreciation and amortization | 191 | 175 | 377 | 345
Total operating expenses | 25,311 | 22,447 | 50,334 | 45,128
Income (loss) from operations | 1,436 | 1,215 | 3,155 | 2,504
Interest expense | 120 | 101 | 233 | 191
Other expense (income), net | 54 | (8) | 46 | (29)
Income before income taxes and equity in net losses | 1,262 | 1,122 | 2,876 | 2,342
Equity in net earnings (losses) | (10) | 2 | (27) | (2)
Segment earnings (loss) | 1,252 | 1,124 | 2,849 | 2,340
Net (income) loss attributable to noncontrolling interests | 3 | (1) | 4 | (1)
Segment earnings (loss) attributable to Humana | 1,255 | 1,123 | 2,853 | 2,339
Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 25,875 | 22,532 | 51,778 | 45,499
Investment income (loss) | 134 | 46 | 231 | 92
Total operating expenses | 24,844 | 21,425 | 49,420 | 43,396
CenterWell |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 4,530 | 4,527 | 9,035 | 8,892
Investment income (loss) | 0 | 1 | 0 | 3
Total operating expenses | 4,243 | 4,169 | 8,418 | 8,164
Operating segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 25,495 | 22,266 | 51,045 | 44,969
Services revenue | 978 | 1,349 | 1,977 | 2,613
Total revenues | 26,473 | 23,615 | 53,022 | 47,582
Operating segments | Individual Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 19,749 | 16,692 | 39,558 | 33,744
Operating segments | Group Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 1,732 | 1,857 | 3,497 | 3,732
Operating segments | Medicare stand-alone PDP |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 568 | 606 | 1,184 | 1,245
Operating segments | Total Medicare |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 22,049 | 19,155 | 44,239 | 38,721
Operating segments | Commercial fully-insured |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 950 | 1,109 | 1,968 | 2,249
Operating segments | Specialty benefits |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 252 | 261 | 506 | 522
Operating segments | Medicare Supplement |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 182 | 185 | 361 | 367
Operating segments | Medicaid and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 2,062 | 1,556 | 3,971 | 3,110
Operating segments | Home solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 341 | 752 | 655 | 1,478
Operating segments | Provider services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 190 | 137 | 391 | 250
Operating segments | Commercial ASO |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 64 | 75 | 135 | 152
Operating segments | Military and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 167 | 131 | 338 | 258
Operating segments | Pharmacy solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 216 | 254 | 458 | 475
Operating segments | Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 25,495 | 22,266 | 51,045 | 44,969
Services revenue | 231 | 206 | 473 | 410
Total revenues | 25,726 | 22,472 | 51,518 | 45,379
Benefits | 22,127 | 19,164 | 44,120 | 38,898
Operating costs | 2,545 | 2,105 | 4,963 | 4,192
Depreciation and amortization | 172 | 156 | 337 | 306
Income (loss) from operations | 1,031 | 1,107 | 2,358 | 2,103
Interest expense | 0 | 0 | 0 | 0
Other expense (income), net | 0 | 0 | 0 | 0
Income before income taxes and equity in net losses | 1,031 | 1,107 | 2,358 | 2,103
Equity in net earnings (losses) | 1 | 8 | (2) | 8
Segment earnings (loss) | 1,032 | 1,115 | 2,356 | 2,111
Net (income) loss attributable to noncontrolling interests | 3 | 0 | 4 | 0
Segment earnings (loss) attributable to Humana | 1,035 | 1,115 | 2,360 | 2,111
Operating segments | Insurance | Individual Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 19,749 | 16,692 | 39,558 | 33,744
Operating segments | Insurance | Group Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 1,732 | 1,857 | 3,497 | 3,732
Operating segments | Insurance | Medicare stand-alone PDP |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 568 | 606 | 1,184 | 1,245
Operating segments | Insurance | Total Medicare |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 22,049 | 19,155 | 44,239 | 38,721
Operating segments | Insurance | Commercial fully-insured |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 950 | 1,109 | 1,968 | 2,249
Operating segments | Insurance | Specialty benefits |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 252 | 261 | 506 | 522
Operating segments | Insurance | Medicare Supplement |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 182 | 185 | 361 | 367
Operating segments | Insurance | Medicaid and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 2,062 | 1,556 | 3,971 | 3,110
Operating segments | Insurance | Home solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 0 | 0 | 0 | 0
Operating segments | Insurance | Provider services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 0 | 0 | 0 | 0
Operating segments | Insurance | Commercial ASO |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 64 | 75 | 135 | 152
Operating segments | Insurance | Military and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 167 | 131 | 338 | 258
Operating segments | Insurance | Pharmacy solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 0 | 0 | 0 | 0
Operating segments | CenterWell |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Services revenue | 747 | 1,143 | 1,504 | 2,203
Total revenues | 747 | 1,143 | 1,504 | 2,203
Benefits | 0 | 0 | 0 | 0
Operating costs | 4,193 | 4,125 | 8,319 | 8,073
Depreciation and amortization | 50 | 44 | 99 | 91
Income (loss) from operations | 287 | 358 | 617 | 728
Interest expense | 1 | 0 | 1 | 0
Other expense (income), net | 0 | 0 | 0 | 0
Income before income taxes and equity in net losses | 286 | 358 | 616 | 728
Equity in net earnings (losses) | (11) | (6) | (25) | (10)
Segment earnings (loss) | 275 | 352 | 591 | 718
Net (income) loss attributable to noncontrolling interests | 0 | (1) | 0 | (1)
Segment earnings (loss) attributable to Humana | 275 | 351 | 591 | 717
Operating segments | CenterWell | Individual Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Group Medicare Advantage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Medicare stand-alone PDP |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Total Medicare |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Commercial fully-insured |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Specialty benefits |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Medicare Supplement |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Medicaid and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Premiums | 0 | 0 | 0 | 0
Operating segments | CenterWell | Home solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 341 | 752 | 655 | 1,478
Operating segments | CenterWell | Provider services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 190 | 137 | 391 | 250
Operating segments | CenterWell | Commercial ASO |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 0 | 0 | 0 | 0
Operating segments | CenterWell | Military and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 0 | 0 | 0 | 0
Operating segments | CenterWell | Pharmacy solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Services revenue | 216 | 254 | 458 | 475
Eliminations/ Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | (3,658) | (3,397) | (7,324) | (6,759)
Investment income (loss) | 140 | 0 | 236 | (45)
Benefits | (118) | (65) | (253) | (174)
Operating costs | (3,627) | (3,057) | (7,192) | (6,206)
Depreciation and amortization | (31) | (25) | (59) | (52)
Total operating expenses | (3,776) | (3,147) | (7,504) | (6,432)
Income (loss) from operations | 118 | (250) | 180 | (327)
Interest expense | 119 | 101 | 232 | 191
Other expense (income), net | 54 | (8) | 46 | (29)
Income before income taxes and equity in net losses | (55) | (343) | (98) | (489)
Equity in net earnings (losses) | 0 | 0 | 0 | 0
Segment earnings (loss) | (55) | (343) | (98) | (489)
Net (income) loss attributable to noncontrolling interests | 0 | 0 | 0 | 0
Segment earnings (loss) attributable to Humana | (55) | (343) | (98) | (489)
Eliminations/ Corporate | Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 15 | 14 | 29 | 28
Eliminations/ Corporate | Insurance | Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 15 | 14 | 29 | 28
Eliminations/ Corporate | Insurance | Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Eliminations/ Corporate | CenterWell |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 3,783 | 3,383 | 7,531 | 6,686
Eliminations/ Corporate | CenterWell | Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 1,144 | 894 | 2,277 | 1,751
Eliminations/ Corporate | CenterWell | Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 2,639 | 2,489 | 5,254 | 4,935
Intersegment Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | (3,798) | (3,397) | (7,560) | (6,714)
Intersegment Eliminations | Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | (1,159) | (908) | (2,306) | (1,779)
Intersegment Eliminations | Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ (2,639) | $ (2,489) | $ (5,254) | $ (4,935)

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