Earnings Per Share

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

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

	Three Months Ended March 31,
	2023		2022
	(in millions, except per share amounts)
Net income	$	699.8	$	762.1
Basic weighted-average common shares outstanding	257.4		255.1
Effect of potentially dilutive securities:
Stock options	1.3		1.3
Restricted stock units (including PSUs)	1.6		1.4
Employee stock purchase program	0.0		0.1
Diluted weighted-average common shares outstanding	260.3		257.9
Basic net income per common share	$	2.72	$	2.99
Diluted net income per common share	$	2.69	$	2.96

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 March 31,
	2023	2022
	(in millions)
Stock options	0.0	0.0
Unvested restricted stock units (including PSUs)	0.6	0.6