Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator for earnings per share calculation:
Net income attributable to CVS Health, basic	$ 1,770	$ 1,901	$ 2,883	$ 4,037
Net income attributable to CVS Health, diluted	$ 1,770	$ 1,901	$ 2,883	$ 4,037
Denominator for earnings per share calculation:
Weighted average shares, basic (in shares)	1,256	1,283	1,258	1,283
Weighted average shares, diluted (in shares)	1,259	1,287	1,263	1,289
Earnings per share:
Basic (in dollars per share)	$ 1.41	$ 1.48	$ 2.29	$ 3.15
Diluted (in dollars per share)	$ 1.41	$ 1.48	$ 2.28	$ 3.13
Restricted stock units and performance stock units
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	1	2	3	4
Stock options and stock appreciation rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of EPS (in shares)	7	9	7	6
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	2	2	2	2