CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Services	Health Care [Member]	Health Care [Member]	Health Care [Member]	Health Care [Member]
Revenues:
Premiums	$ 30,711	$ 27,951	$ 91,941	$ 84,354
Services	1,600	1,103	4,334	3,265
Investment income	338	343	874	929
Total revenues	32,649	29,397	97,149	88,548
Operating expenses:
Benefits	27,991	25,120	82,091	75,283
Operating costs	4,085	3,339	11,012	9,529
Depreciation and amortization	173	210	534	631
Total operating expenses	32,249	28,669	93,637	85,443
Income (loss) from operations	400	728	3,512	3,105
Loss on sale of business	63	0	63	0
Interest expense	168	169	485	496
Other expense (income), net	35	(92)	398	26
Income before income taxes and equity in net losses	134	651	2,566	2,583
(Benefit) provision for income taxes	(86)	155	499	629
Equity in net losses	(26)	(16)	(88)	(57)
Net income	194	480	1,979	1,897
Net loss attributable to noncontrolling interests	1	0	5	3
Net income attributable to Humana	$ 195	$ 480	$ 1,984	$ 1,900
Basic earnings per common share (in dollars per share)	$ 1.62	$ 3.99	$ 16.47	$ 15.76
Diluted earnings per common share (in dollars per share)	$ 1.62	$ 3.98	$ 16.43	$ 15.72

The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.