CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 832	$ 1,195	$ 3,030	$ 2,821
Other comprehensive income (loss):
Change in gross unrealized investment losses	(365)	(590)	(314)	(1,982)
Effect of income taxes	85	135	73	455
Total change in unrealized investment losses, net of tax	(280)	(455)	(241)	(1,527)
Reclassification adjustment for net realized losses	3	50	56	23
Effect of income taxes	0	(11)	(14)	(5)
Total reclassification adjustment, net of tax	3	39	42	18
Other comprehensive loss, net of tax	(277)	(416)	(199)	(1,509)
Comprehensive income attributable to Humana	$ 555	$ 779	$ 2,831	$ 1,312