Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

The following table presents the calculation of basic and diluted earnings per share:

	Three Months Ended
	March 31,
(MILLIONS OF DOLLARS AND SHARES, EXCEPT PER SHARE DATA)	2020		2019
Numerator
Net income	$	423	$	312
Denominator
Weighted-average common shares outstanding	475.6		479.6
Common stock equivalents: stock options, RSUs, PSUs and DSUs	3.4		3.5
Weighted-average common and potential dilutive shares outstanding	479.0		483.1
Earnings per share —basic	$	0.89	$	0.65
Earnings per share —diluted	$	0.88	$	0.65