CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 480	$ 832	$ 1,900	$ 3,030
Other comprehensive income (loss):
Change in gross unrealized investment (losses) gains	619	(365)	458	(314)
Effect of income taxes	(142)	85	(104)	73
Total change in unrealized investment (losses) gains, net of tax	477	(280)	354	(241)
Reclassification adjustment for net realized losses (gains)	(10)	3	(10)	56
Effect of income taxes	2	0	2	(14)
Total reclassification adjustment, net of tax	(8)	3	(8)	42
Other comprehensive (loss) income, net of tax	469	(277)	346	(199)
Comprehensive income attributable to Humana	$ 949	$ 555	$ 2,246	$ 2,831