CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Health Care [Member]	Health Care [Member]	Health Care [Member]	Health Care [Member]
Revenues:
Premiums	$ 25,495	$ 22,266	$ 51,045	$ 44,969
Services	978	1,349	1,977	2,613
Investment income	274	47	467	50
Total revenues	26,747	23,662	53,489	47,632
Operating expenses:
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
Provision for income taxes	296	427	655	713
Equity in net (losses) earnings	(10)	2	(27)	(2)
Net income	956	697	2,194	1,627
Net loss (income) attributable to noncontrolling interests	3	(1)	4	(1)
Net income attributable to Humana	$ 959	$ 696	$ 2,198	$ 1,626
Basic earnings per common share (in dollars per share)	$ 7.70	$ 5.50	$ 17.62	$ 12.83
Diluted earnings per common share (in dollars per share)	$ 7.66	$ 5.48	$ 17.54	$ 12.77