Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Computation of Earnings Per Share

The computation of earnings per share is as follows:

	Three Months Ended
	March 31, 2020		March 31, 2019
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	709,067	$	344,052
Shares used in computation:
Weighted-average common shares outstanding	439,352		436,947
Basic earnings per share	$	1.61	$	0.79
Diluted earnings per share:
Net income	$	709,067	$	344,052
Shares used in computation:
Weighted-average common shares outstanding	439,352		436,947
Employee stock options	13,142		14,975
Weighted-average number of shares	452,494		451,922
Diluted earnings per share	$	1.57	$	0.76

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, 2020	March 31, 2019
	(in thousands)
Employee stock options	1,516	652