v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Amounts attributable to S&P Global Inc. common shareholders:        
Net income $ 1,217 $ 1,072 $ 2,613 $ 2,161
Basic weighted-average number of common shares outstanding (shares) 295,400,000 305,900,000 296,400,000 306,600,000
Effect of dilutive securities (shares) 100,000 200,000 200,000 300,000
Diluted weighted-average number of common shares outstanding (shares) 295,500,000 306,100,000 296,600,000 306,900,000
Net income:        
Basic (USD per share) $ 4.12 $ 3.50 $ 8.82 $ 7.05
Diluted (USD per share) $ 4.12 $ 3.50 $ 8.81 $ 7.04
Stock Options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of diluted earnings (shares) 0 0 0 0
Restricted Stock and Unit Awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of diluted earnings (shares)     600,000 700,000