Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Common 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,
	2024		2023
	(in millions, except per share amounts)
Net income	$	1,099.6	$	699.8
Basic weighted-average common shares outstanding	258.2		257.4
Effect of potentially dilutive securities:
Restricted stock units (including performance-based restricted stock units (“PSUs”))	1.7		1.6
Stock options	1.2		1.3
Employee stock purchase program	0.0		0.0
Diluted weighted-average common shares outstanding	261.1		260.3
Basic net income per common share	$	4.26	$	2.72
Diluted net income per common share	$	4.21	$	2.69

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,
	2024	2023
	(in millions)
Unvested restricted stock units (including PSUs)	—	0.6