SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, By Segment

	Insurance		CenterWell		Eliminations/ Corporate		Consolidated
	(in millions)
2023
External revenues
Premiums:
Individual Medicare Advantage	$	78,837	$	—	$	—	$	78,837
Group Medicare Advantage	6,869		—		—		6,869
Medicare stand-alone PDP	2,189		—		—		2,189
Total Medicare	87,895		—		—		87,895
Commercial fully-insured	3,527		—		—		3,527
Specialty benefits	1,007		—		—		1,007
Medicare Supplement	735		—		—		735
State-based contracts and other	8,108		—		—		8,108
Total premiums	101,272		—		—		101,272
Services revenue:
Home solutions	—		1,342		—		1,342
Primary care	—		842		—		842
Commercial ASO	237		—		—		237
Military services and other	763		—		—		763
Pharmacy solutions	—		849		—		849
Total services revenue	1,000		3,033		—		4,033
Total external revenues	102,272		3,033		—		105,305
Intersegment revenues
Services	31		4,921		(4,952)		—
Products	—		10,451		(10,451)		—
Intersegment revenues	31		15,372		(15,403)		—
Investment income	551		—		518		1,069
Total revenues	102,854		18,405		(14,885)		106,374
Operating expenses:
Benefits	89,100		—		(706)		88,394
Operating costs	10,408		16,791		(14,011)		13,188
Depreciation and amortization	692		210		(123)		779
Total operating expenses	100,200		17,001		(14,840)		102,361
Income (loss) from operations	2,654		1,404		(45)		4,013
Interest expense	—		3		490		493
Other expense, net	—		—		137		137
Income (loss) before income taxes and equity in net losses	2,654		1,401		(672)		3,383
Equity in net losses	(6)		(57)		—		(63)
Segment earnings (loss)	$	2,648	$	1,344	$	(672)	$	3,320
Net loss (income) attributable to noncontrolling interests	6		(1)		—		5
Segment earnings (loss) attributable to Humana	$	2,654	$	1,343	$	(672)	$	3,325

	Insurance		CenterWell		Eliminations/ Corporate		Consolidated
	(in millions)
2022
External revenues
Premiums:
Individual Medicare Advantage	$	65,591	$	—	$	—	$	65,591
Group Medicare Advantage	7,297		—		—		7,297
Medicare stand-alone PDP	2,269		—		—		2,269
Total Medicare	75,157		—		—		75,157
Commercial fully-insured	4,389		—		—		4,389
Specialty benefits	1,047		—		—		1,047
Medicare Supplement	743		—		—		743
State-based contracts and other	6,376		—		—		6,376
Total premiums	87,712		—		—		87,712
Services revenue:
Home solutions	—		2,333		—		2,333
Primary care	—		568		—		568
Commercial ASO	300		—		—		300
Military services and other	550		—		—		550
Pharmacy solutions	—		1,025		—		1,025
Total services revenue	850		3,926		—		4,776
Total external revenues	88,562		3,926		—		92,488
Intersegment revenues
Services	56		3,532		(3,588)		—
Products	—		9,841		(9,841)		—
Intersegment revenues	56		13,373		(13,429)		—
Investment income	223		8		151		382
Total revenues	88,841		17,307		(13,278)		92,870
Operating expenses:
Benefits	75,934		—		(244)		75,690
Operating costs	9,251		15,835		(12,415)		12,671
Depreciation and amortization	634		181		(106)		709
Total operating expenses	85,819		16,016		(12,765)		89,070
Income (loss) from operations	3,022		1,291		(513)		3,800
Gain on sale of Gentiva Hospice	—		(237)		—		(237)
Interest expense	—		—		401		401
Other expense, net	—		—		68		68
Income (loss) before income taxes and equity in net earnings (losses)	3,022		1,528		(982)		3,568
Equity in net earnings (losses)	18		(22)		—		(4)
Segment earnings (loss)	$	3,040	$	1,506	$	(982)	$	3,564
Net loss (income) attributable to noncontrolling interests	5		(1)		—		4
Segment earnings (loss) attributable to Humana	$	3,045	$	1,505	$	(982)	$	3,568

	Insurance		CenterWell		Eliminations/ Corporate		Consolidated
	(in millions)
2021
External revenues
Premiums:
Individual Medicare Advantage	$	58,654	$	—	$	—	$	58,654
Group Medicare Advantage	6,955		—		—		6,955
Medicare stand-alone PDP	2,371		—		—		2,371
Total Medicare	67,980		—		—		67,980
Commercial fully-insured	4,950		—		—		4,950
Specialty benefits	1,052		—		—		1,052
Medicare Supplement	731		—		—		731
State-based contracts and other	5,109		—		—		5,109
Total premiums	79,822		—		—		79,822
Services revenue:
Home solutions	—		1,166		—		1,166
Primary care	—		413		—		413
Commercial ASO	306		—		—		306
Military services and other	547		—		—		547
Pharmacy solutions	—		623		—		623
Total services revenue	853		2,202		—		3,055
Total external revenues	80,675		2,202		—		82,877
Intersegment revenues
Services	41		2,828		(2,869)		—
Products	—		9,024		(9,024)		—
Intersegment revenues	41		11,852		(11,893)		—
Investment income (loss)	214		4		(31)		187
Total revenues	80,930		14,058		(11,924)		83,064
Operating expenses:
Benefits	69,639		—		(440)		69,199
Operating costs	8,340		12,968		(11,187)		10,121
Depreciation and amortization	539		152		(95)		596
Total operating expenses	78,518		13,120		(11,722)		79,916
Income (loss) from operations	2,412		938		(202)		3,148
Interest expense	—		—		326		326
Other income, net	—		—		(532)		(532)
Income before income taxes and equity in net earnings	2,412		938		4		3,354
Equity in net earnings	—		65		—		65
Segment earnings	$	2,412	$	1,003	$	4	$	3,419
Net income attributable to noncontrolling interest	—		(1)		—		(1)
Segment earnings attributable to Humana	$	2,412	$	1,002	$	4	$	3,418