Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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,
	2022		2021
	(in millions, except per share amounts)
Net income	$	762.1	$	653.1
Basic weighted-average common shares outstanding	255.1		259.4
Effect of potentially dilutive securities:
Stock options	1.3		1.2
Restricted stock units (including PSUs)	1.4		1.3
Employee stock purchase program	0.1		0.0
Diluted weighted-average common shares outstanding	257.9		261.9
Basic net income per common share	$	2.99	$	2.52
Diluted net income per common share	$	2.96	$	2.49

Schedule of Potential Gross Common Equivalent Shares

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,
	2022	2021
	(in millions)
Stock options	0.0	0.4
Unvested restricted stock units (including PSUs)	0.6	0.7