Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Calculation for Basic and Diluted Earnings per Share

The calculation for basic and diluted EPS is as follows:

(in millions, except per share data)	Year Ended December 31,
	2019		2018		2017
Amount attributable to S&P Global Inc. common shareholders:
Net income	$	2,123	$	1,958	$	1,496
Basic weighted-average number of common shares outstanding	245.4		250.9		256.3
Effect of stock options and other dilutive securities	1.5		2.3		2.6
Diluted weighted-average number of common shares outstanding	246.9		253.2		258.9
Earnings per share attributable to S&P Global Inc. common shareholders:
Net income:
Basic	$	8.65	$	7.80	$	5.84
Diluted	$	8.60	$	7.73	$	5.78