Condensed Consolidated Statements of Comprehensive Income (Loss) (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 (loss)	$ (3,990)	$ 71	$ (1,195)	$ 2,963
Other comprehensive income, net of tax:
Net unrealized investment gains	192	679	595	544
Change in discount rate on long-duration insurance reserves	(50)	(147)	(60)	(26)
Foreign currency translation adjustments	6	0	10	0
Net cash flow hedges	(4)	(4)	(9)	(12)
Other comprehensive income (loss)	144	528	536	506
Comprehensive income (loss)	(3,846)	599	(659)	3,469
Comprehensive loss attributable to noncontrolling interests	15	16	20	7
Comprehensive income (loss) attributable to CVS Health	$ (3,831)	$ 615	$ (639)	$ 3,476