CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Services	Health Care [Member]	Health Care [Member]	Health Care [Member]
Revenues:
Premiums	$ 101,272	$ 87,712	$ 79,822
Services	4,033	4,776	3,055
Investment income	1,069	382	187
Total revenues	106,374	92,870	83,064
Operating expenses:
Benefits	88,394	75,690	69,199
Operating costs	13,188	12,671	10,121
Depreciation and amortization	779	709	596
Total operating expenses	102,361	89,070	79,916
Income from operations	4,013	3,800	3,148
Gain on sale of Gentiva Hospice	0	(237)	0
Interest expense	493	401	326
Other expense (income), net	137	68	(532)
Income before income taxes and equity in net earnings	3,383	3,568	3,354
Provision for income taxes	836	762	485
Equity in net (losses) earnings	(63)	(4)	65
Net income	2,484	2,802	2,934
Net loss (income) attributable to noncontrolling interests	5	4	(1)
Net income attributable to Humana	$ 2,489	$ 2,806	$ 2,933
Basic earnings per common share (in dollars per share)	$ 20.09	$ 22.20	$ 22.79
Diluted earnings per common share (in dollars per share)	$ 20.00	$ 22.08	$ 22.67