Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Computation of Earnings Per Share

The computation of earnings per share is as follows:

	Three Months Ended
	March 31, 2021		March 31, 2020
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	1,706,715	$	709,067
Shares used in computation:
Weighted-average common shares outstanding	443,224		439,352
Basic earnings per share	$	3.85	$	1.61
Diluted earnings per share:
Net income	$	1,706,715	$	709,067
Shares used in computation:
Weighted-average common shares outstanding	443,224		439,352
Employee stock options	12,417		13,142
Weighted-average number of shares	455,641		452,494
Diluted earnings per share	$	3.75	$	1.57

Summary of Potential Common Shares Excluded from the Diluted Calculation

The following table summarizes the potential common shares excluded from the diluted calculation:

	Three Months Ended
	March 31, 2021	March 31, 2020
	(in thousands)
Employee stock options	257	1,516