Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Numerator for earnings per share calculation:
Net income attributable to CVS Health, basic	$ 1,779	$ 1,113
Net income attributable to CVS Health, diluted	$ 1,779	$ 1,113
Denominator for earnings per share calculation:
Weighted average shares, basic (in shares)	1,261	1,260
Weighted average shares, diluted (in shares)	1,264	1,267
Earnings per share:
Basic (in dollars per share)	$ 1.41	$ 0.88
Diluted (in dollars per share)	$ 1.41	$ 0.88
Restricted stock units and performance stock units
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	2	5
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)	10	6
Denominator for earnings per share calculation:
Effect of dilutive securities (in shares)	1	2