Earnings Per Share

9 Months Ended

Sep. 30, 2023

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


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022

	(in millions, except per share amounts)
Net income	$	1,035.3	$	930.5	$	2,650.8	$	2,503.1

Basic weighted-average common shares outstanding	258.0		256.5		257.7		255.8
Effect of potentially dilutive securities:
Stock options	1.2		1.4		1.2		1.4
Restricted stock units (including PSUs)	1.4		1.6		1.5		1.4
Employee stock purchase program	0.0		0.0		0.0		0.1
Diluted weighted-average common shares outstanding	260.6		259.5		260.4		258.7

Basic net income per common share	$	4.01	$	3.63	$	10.29	$	9.78
Diluted net income per common share	$	3.97	$	3.59	$	10.18	$	9.68

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:


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022

	(in millions)
Stock options	—	—	0.0	0.0
Unvested restricted stock units (including PSUs)	—	0.0	0.2	0.2