Earnings Per Share

12 Months Ended

Dec. 31, 2022

The following table sets forth the computation of basic and diluted net income per common share for the periods ended:


	2022		2021		2020
	(in millions, except per share amounts)
Net income	$	3,322.0	$	2,342.1	$	2,711.7

Basic weighted-average common shares outstanding	256.1		257.7		259.8
Effect of potentially dilutive securities:
Stock options	1.4		1.1		1.8
Restricted stock units (including PSUs)	1.6		1.1		1.7
Employee stock purchase program	0.0		0.0		0.1
Diluted weighted-average common shares outstanding	259.1		259.9		263.4

Basic net income per common share	$	12.97	$	9.09	$	10.44
Diluted net income per common share	$	12.82	$	9.01	$	10.29

We did not include the securities in the following table in the computation of the diluted net income per common share because the effect would have been anti-dilutive during each period:


	2022	2021	2020
	(in millions)
Stock options	0.0	0.7	0.3
Unvested restricted stock units (including PSUs)	0.2	0.4	0.3