Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Calculation for Basic and Diluted Earnings Per Share

The calculation for basic and diluted EPS for the periods ended June 30 is as follows:

(in millions, except per share amounts)	Three Months				Six Months
	2018		2017		2018		2017
Amounts attributable to S&P Global Inc. common shareholders:
Net income	$	461	$	421	$	951	$	820
Basic weighted-average number of common shares outstanding	251.1		257.3		251.7		257.7
Effect of stock options and other dilutive securities	2.2		2.6		2.1		2.7
Diluted weighted-average number of common shares outstanding	253.3		259.9		253.8		260.4
Earnings per share attributable to S&P Global Inc. common shareholders:
Net income:
Basic	$	1.83	$	1.63	$	3.78	$	3.18
Diluted	$	1.82	$	1.62	$	3.75	$	3.15