CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income attributable to Humana	$ 1,244	$ 741
Other comprehensive income (loss):
Change in gross unrealized investment gains (losses)	258	(114)
Effect of income taxes	(58)	28
Total change in unrealized investment gains (losses), net of tax	200	(86)
Reclassification adjustment for net realized gains	(2)	(1)
Effect of income taxes	1	0
Total reclassification adjustment, net of tax	(1)	(1)
Other comprehensive income (loss), net of tax	199	(87)
Comprehensive income attributable to Humana	$ 1,443	$ 654