Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator for earnings per share calculation:
Net income attributable to CVS Health	$ 2,136	$ 2,354
Denominator for earnings per share calculation:
Weighted average shares, basic (in shares)	1,283	1,312
Weighted average diluted shares outstanding (in shares)	1,291	1,328
Earnings per share:
Earnings (loss) per share, basic (in dollars per share)	$ 1.66	$ 1.79
Earnings (loss) per share, diluted (in dollars per share)	$ 1.65	$ 1.77
Restricted stock units and performance stock units
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	5	10
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)	4	2
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	3	6