Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,914	$ 3,039	$ 4,056	$ 5,394
Other comprehensive income (loss), net of tax:
Net unrealized investment gains (losses)	(64)	(865)	406	(1,997)
Change in discount rate on long-duration insurance reserves	60	310	(14)	679
Foreign currency translation adjustments	2	(1)	1	2
Net cash flow hedges	19	15	13	12
Pension and other postretirement benefits	0	1	0	1
Other comprehensive income (loss)	17	(540)	406	(1,303)
Comprehensive income	1,931	2,499	4,462	4,091
Comprehensive income attributable to noncontrolling interests	(13)	(10)	(19)	(11)
Comprehensive income attributable to CVS Health	$ 1,918	$ 2,489	$ 4,443	$ 4,080