Condensed Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Net Unrealized (Losses) Gains on Investments [Member]	Foreign Currency Translation (Losses) Gains [Member]	Nonredeemable Noncontrolling Interests [Member]
Balance at Dec. 31, 2023	$ 94,421	$ 9	$ 0	$ 95,774	$ (1,971)	$ (5,056)	$ 5,665
Balance (in shares) at Dec. 31, 2023		924
Net earnings	8,862			8,862
Net earnings attributable to nonredeemable noncontrolling interest							462
Net Earnings, Including Portion Attributable to Nonredeemable Noncontrolling Interest	9,324
Other comprehensive income (loss)	4,574				557	4,017
Issuances of common stock, and related tax effects (in shares)		7
Issuances of common stock, and related tax effects	1,280	$ 0	1,280
Share-based compensation	770		770
Common share repurchases (in shares)		(8)
Common share repurchases	(4,045)	$ 0	(1,528)	(2,517)
Cash dividends paid on common shares	(5,601)			(5,601)
Redeemable noncontrolling interests fair value and other adjustments	(61)		(61)
Acquisition and other adjustments of nonredeemable noncontrolling interests	(291)						(291)
Distribution to nonredeemable noncontrolling interests	(490)						(490)
Balance at Sep. 30, 2024	$ 99,881	$ 9	461	96,518	(1,414)	(1,039)	5,346
Balance (in shares) at Sep. 30, 2024		923
Common Stock, Dividends, Per Share, Cash Paid	$ 6.08
Balance at Jun. 30, 2024	$ 94,676	$ 9	373	92,400	(2,296)	(1,127)	5,317
Balance (in shares) at Jun. 30, 2024		921
Net earnings	6,055			6,055
Net earnings attributable to nonredeemable noncontrolling interest							155
Net Earnings, Including Portion Attributable to Nonredeemable Noncontrolling Interest	6,210
Other comprehensive income (loss)	970				882	88
Issuances of common stock, and related tax effects (in shares)		4
Issuances of common stock, and related tax effects	842	$ 0	842
Share-based compensation	208		208
Common share repurchases (in shares)		(2)
Common share repurchases	(957)	$ 0	(957)	0
Cash dividends paid on common shares	(1,937)			(1,937)
Redeemable noncontrolling interests fair value and other adjustments	(5)		(5)
Acquisition and other adjustments of nonredeemable noncontrolling interests	28						28
Distribution to nonredeemable noncontrolling interests	(154)						(154)
Balance at Sep. 30, 2024	$ 99,881	$ 9	461	96,518	(1,414)	(1,039)	5,346
Balance (in shares) at Sep. 30, 2024		923
Common Stock, Dividends, Per Share, Cash Paid	$ 2.10
Balance at Dec. 31, 2024	$ 98,268	$ 9	0	96,036	(2,226)	(1,161)	5,610
Balance (in shares) at Dec. 31, 2024	915	915
Net earnings	$ 12,046			12,046
Net earnings attributable to nonredeemable noncontrolling interest							464
Net Earnings, Including Portion Attributable to Nonredeemable Noncontrolling Interest	12,510
Other comprehensive income (loss)	1,176				1,028	148
Issuances of common stock, and related tax effects (in shares)		3
Issuances of common stock, and related tax effects	620	$ 0	620
Share-based compensation	805		805
Common share repurchases (in shares)		(12)
Common share repurchases	(5,527)	$ 0	(954)	(4,573)
Cash dividends paid on common shares	(5,914)			(5,914)
Redeemable noncontrolling interests fair value and other adjustments	(77)		(77)
Acquisition and other adjustments of nonredeemable noncontrolling interests	209						209
Distribution to nonredeemable noncontrolling interests	(501)						(501)
Balance at Sep. 30, 2025	$ 101,569	$ 9	394	97,595	(1,198)	(1,013)	5,782
Balance (in shares) at Sep. 30, 2025	906	906
Common Stock, Dividends, Per Share, Cash Paid	$ 6.52
Balance at Jun. 30, 2025	$ 100,469	$ 9	0	97,250	(1,593)	(942)	5,745
Balance (in shares) at Jun. 30, 2025		905
Net earnings	2,348			2,348
Net earnings attributable to nonredeemable noncontrolling interest							167
Net Earnings, Including Portion Attributable to Nonredeemable Noncontrolling Interest	2,515
Other comprehensive income (loss)	324				395	(71)
Issuances of common stock, and related tax effects (in shares)		1
Issuances of common stock, and related tax effects	241	$ 0	241
Share-based compensation	214		214
Common share repurchases (in shares)		0
Common share repurchases	0	$ 0	1	(1)
Cash dividends paid on common shares	(2,002)			(2,002)
Redeemable noncontrolling interests fair value and other adjustments	(62)		(62)
Acquisition and other adjustments of nonredeemable noncontrolling interests	34						34
Distribution to nonredeemable noncontrolling interests	(164)						(164)
Balance at Sep. 30, 2025	$ 101,569	$ 9	$ 394	$ 97,595	$ (1,198)	$ (1,013)	$ 5,782
Balance (in shares) at Sep. 30, 2025	906	906
Common Stock, Dividends, Per Share, Cash Paid	$ 2.21

UNITEDHEALTH GROUP INC 10-Q