CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 195	$ 480	$ 1,984	$ 1,900
Other comprehensive income (loss):
Change in gross unrealized investment gains (losses)	195	619	570	458
Effect of income taxes	(45)	(142)	(130)	(104)
Total change in unrealized investment gains (losses), net of tax	150	477	440	354
Reclassification adjustment for net realized (losses) gains	(44)	(10)	(51)	(10)
Effect of income taxes	11	2	12	2
Total reclassification adjustment, net of tax	(33)	(8)	(39)	(8)
Other comprehensive income (loss), net of tax	117	469	401	346
Comprehensive income attributable to Humana	$ 312	$ 949	$ 2,385	$ 2,246