Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Services revenue, type	Health Care [Member]	Health Care [Member]	Health Care [Member]	Health Care [Member]
Revenues:
Premiums	$ 21,468	$ 19,885	$ 66,437	$ 59,987
Services	1,159	845	3,772	1,802
Investment income (loss)	172	(33)	222	221
Total revenues	22,799	20,697	70,431	62,010
Operating expenses:
Benefits	18,384	17,316	57,108	51,761
Operating costs	3,061	2,603	9,120	6,726
Depreciation and amortization	182	150	527	436
Total operating expenses	21,627	20,069	66,755	58,923
Income (loss) from operations	1,172	628	3,676	3,087
Gain on sale of KAH Hospice	(240)	0	(240)	0
Interest expense	102	88	293	235
Other expense (income), net	13	(1,096)	(16)	(562)
Income (loss) before income taxes and equity in net earnings	1,297	1,636	3,639	3,414
Provision for income taxes	107	120	820	536
Equity in net earnings	3	15	1	69
Net income	1,193	1,531	2,820	2,947
Net loss attributable to noncontrolling interests	2	0	1	0
Net income attributable to Humana	$ 1,195	$ 1,531	$ 2,821	$ 2,947
Basic earnings per common share (in dollars per share)	$ 9.45	$ 11.91	$ 22.27	$ 22.90
Diluted earnings per common share (in dollars per share)	$ 9.39	$ 11.84	$ 22.16	$ 22.77