v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Numerator for earnings per share calculation:    
Net income attributable to CVS Health, basic $ 2,943 $ 1,779
Net income attributable to CVS Health, diluted $ 2,943 $ 1,779
Denominator for earnings per share calculation:    
Weighted average shares, basic (in shares) 1,273 1,261
Weighted average shares, diluted (in shares) 1,279 1,264
Earnings per share:    
Basic (in dollars per share) $ 2.31 $ 1.41
Diluted (in dollars per share) $ 2.30 $ 1.41
Restricted stock units and performance stock units    
Denominator for earnings per share calculation:    
Effect of dilutive securities (in shares) 5 2
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 10
Denominator for earnings per share calculation:    
Effect of dilutive securities (in shares) 1 1