CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Health Care [Member]	Health Care [Member]
Revenues:
Premiums	$ 25,550	$ 22,703
Services	999	1,264
Investment income	193	3
Total revenues	26,742	23,970
Operating expenses:
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
Provision for income taxes	359	286
Equity in net losses	(17)	(4)
Net income	1,238	930
Net loss attributable to noncontrolling interests	1	0
Net income attributable to Humana	$ 1,239	$ 930
Basic earnings per common share (in dollars per share)	$ 9.91	$ 7.32
Diluted earnings per common share (in dollars per share)	$ 9.87	$ 7.29