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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Segment Reporting Information [Line Items] |  |
Premiums | $ 25,550 | $ 22,703
Services revenue: | 999 | 1,264
Total revenues | 26,742 | 23,970
Investment income (loss) | 193 | 3
Benefits | 21,858 | 19,625
Operating costs | 2,979 | 2,886
Depreciation and amortization | 186 | 170
Total operating expenses | 25,023 | 22,681
Income from operations | 1,719 | 1,289
Interest expense | 113 | 90
Other income, net | (8) | (21)
Income before income taxes and equity in net losses | 1,614 | 1,220
Equity in net losses | (17) | (4)
Segment earnings (loss) | 1,597 | 1,216
Net loss (income) attributable to noncontrolling interests | 1 | 0
Segment earnings (loss) attributable to Humana | 1,598 | 1,216
Insurance |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 25,903 | 22,967
Investment income (loss) | 97 | 46
Total operating expenses | 24,576 | 21,971
CenterWell |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 4,505 | 4,365
Investment income (loss) | 0 | 2
Total operating expenses | 4,175 | 3,995
Operating segments |  |
Segment Reporting Information [Line Items] |  |
Premiums | 25,550 | 22,703
Services revenue: | 999 | 1,264
Total revenues | 26,549 | 23,967
Operating segments | Individual Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 19,809 | 17,052
Operating segments | Group Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,765 | 1,875
Operating segments | Medicare stand-alone PDP |  |
Segment Reporting Information [Line Items] |  |
Premiums | 616 | 639
Operating segments | Total Medicare |  |
Segment Reporting Information [Line Items] |  |
Premiums | 22,190 | 19,566
Operating segments | Commercial fully-insured |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,018 | 1,140
Operating segments | Specialty benefits |  |
Segment Reporting Information [Line Items] |  |
Premiums | 254 | 261
Operating segments | Medicare Supplement |  |
Segment Reporting Information [Line Items] |  |
Premiums | 179 | 182
Operating segments | Medicaid and other |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,909 | 1,554
Operating segments | Home solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 314 | 726
Operating segments | Provider services |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 201 | 113
Operating segments | Commercial ASO |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 71 | 77
Operating segments | Military and other |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 171 | 127
Operating segments | Pharmacy solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 242 | 221
Operating segments | Insurance |  |
Segment Reporting Information [Line Items] |  |
Premiums | 25,550 | 22,703
Services revenue: | 242 | 204
Total revenues | 25,792 | 22,907
Benefits | 21,993 | 19,734
Operating costs | 2,418 | 2,087
Depreciation and amortization | 165 | 150
Income from operations | 1,327 | 996
Interest expense | 0 | 0
Other income, net | 0 | 0
Income before income taxes and equity in net losses | 1,327 | 996
Equity in net losses | (3) | 0
Segment earnings (loss) | 1,324 | 996
Net loss (income) attributable to noncontrolling interests | 1 | 0
Segment earnings (loss) attributable to Humana | 1,325 | 996
Operating segments | Insurance | Individual Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 19,809 | 17,052
Operating segments | Insurance | Group Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,765 | 1,875
Operating segments | Insurance | Medicare stand-alone PDP |  |
Segment Reporting Information [Line Items] |  |
Premiums | 616 | 639
Operating segments | Insurance | Total Medicare |  |
Segment Reporting Information [Line Items] |  |
Premiums | 22,190 | 19,566
Operating segments | Insurance | Commercial fully-insured |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,018 | 1,140
Operating segments | Insurance | Specialty benefits |  |
Segment Reporting Information [Line Items] |  |
Premiums | 254 | 261
Operating segments | Insurance | Medicare Supplement |  |
Segment Reporting Information [Line Items] |  |
Premiums | 179 | 182
Operating segments | Insurance | Medicaid and other |  |
Segment Reporting Information [Line Items] |  |
Premiums | 1,909 | 1,554
Operating segments | Insurance | Home solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 0 | 0
Operating segments | Insurance | Provider services |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 0 | 0
Operating segments | Insurance | Commercial ASO |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 71 | 77
Operating segments | Insurance | Military and other |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 171 | 127
Operating segments | Insurance | Pharmacy solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 0 | 0
Operating segments | CenterWell |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Services revenue: | 757 | 1,060
Total revenues | 757 | 1,060
Benefits | 0 | 0
Operating costs | 4,126 | 3,948
Depreciation and amortization | 49 | 47
Income from operations | 330 | 370
Interest expense | 0 | 0
Other income, net | 0 | 0
Income before income taxes and equity in net losses | 330 | 370
Equity in net losses | (14) | (4)
Segment earnings (loss) | 316 | 366
Net loss (income) attributable to noncontrolling interests | 0 | 0
Segment earnings (loss) attributable to Humana | 316 | 366
Operating segments | CenterWell | Individual Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Group Medicare Advantage |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Medicare stand-alone PDP |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Total Medicare |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Commercial fully-insured |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Specialty benefits |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Medicare Supplement |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Medicaid and other |  |
Segment Reporting Information [Line Items] |  |
Premiums | 0 | 0
Operating segments | CenterWell | Home solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 314 | 726
Operating segments | CenterWell | Provider services |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 201 | 113
Operating segments | CenterWell | Commercial ASO |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 0 | 0
Operating segments | CenterWell | Military and other |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 0 | 0
Operating segments | CenterWell | Pharmacy solutions |  |
Segment Reporting Information [Line Items] |  |
Services revenue: | 242 | 221
Eliminations/ Corporate |  |
Segment Reporting Information [Line Items] |  |
Total revenues | (3,666) | (3,362)
Investment income (loss) | 96 | (45)
Benefits | (135) | (109)
Operating costs | (3,565) | (3,149)
Depreciation and amortization | (28) | (27)
Total operating expenses | (3,728) | (3,285)
Income from operations | 62 | (77)
Interest expense | 113 | 90
Other income, net | (8) | (21)
Income before income taxes and equity in net losses | (43) | (146)
Equity in net losses | 0 | 0
Segment earnings (loss) | (43) | (146)
Net loss (income) attributable to noncontrolling interests | 0 | 0
Segment earnings (loss) attributable to Humana | (43) | (146)
Eliminations/ Corporate | Insurance |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 14 | 14
Eliminations/ Corporate | Insurance | Services |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 14 | 14
Eliminations/ Corporate | Insurance | Products |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 0 | 0
Eliminations/ Corporate | CenterWell |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 3,748 | 3,303
Eliminations/ Corporate | CenterWell | Services |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 1,133 | 857
Eliminations/ Corporate | CenterWell | Products |  |
Segment Reporting Information [Line Items] |  |
Total revenues | 2,615 | 2,446
Intersegment Eliminations |  |
Segment Reporting Information [Line Items] |  |
Total revenues | (3,762) | (3,317)
Intersegment Eliminations | Services |  |
Segment Reporting Information [Line Items] |  |
Total revenues | (1,147) | (871)
Intersegment Eliminations | Products |  |
Segment Reporting Information [Line Items] |  |
Total revenues | $ (2,615) | $ (2,446)

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