CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 1,239	$ 930
Other comprehensive income (loss):
Change in gross unrealized investment gains (losses)	188	(769)
Effect of income taxes	(43)	176
Total change in unrealized investment gains (losses), net of tax	145	(593)
Reclassification adjustment for net realized losses (gains)	61	(27)
Effect of income taxes	(15)	6
Total reclassification adjustment, net of tax	46	(21)
Other comprehensive income (loss), net of tax	191	(614)
Comprehensive income attributable to Humana	$ 1,430	$ 316