Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 1,195	$ 1,531	$ 2,821	$ 2,947
Other comprehensive income:
Change in gross unrealized investment losses	(590)	(63)	(1,982)	(247)
Effect of income taxes	135	14	455	56
Total change in unrealized investment losses, net of tax	(455)	(49)	(1,527)	(191)
Reclassification adjustment for net realized gains (losses)	50	(16)	23	(80)
Effect of income taxes	(11)	4	(5)	19
Total reclassification adjustment, net of tax	39	(12)	18	(61)
Other comprehensive loss, net of tax	(416)	(61)	(1,509)	(252)
Comprehensive income attributable to equity method investments	0	(10)	0	6
Comprehensive income attributable to Humana	$ 779	$ 1,460	$ 1,312	$ 2,701