Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Computation of Earnings Per Share

The computation of earnings per share is as follows:

	Year ended December 31,
	2021		2020		2019
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	5,116,228	$	2,761,395	$	1,866,916
Shares used in computation:
Weighted-average common shares outstanding	443,155		440,922		437,799
Basic earnings per share	$	11.55	$	6.26	$	4.26
Diluted earnings per share:
Net income	$	5,116,228	$	2,761,395	$	1,866,916
Shares used in computation:
Weighted-average common shares outstanding	443,155		440,922		437,799
Employee stock options	12,217		13,286		13,966
Weighted-average number of shares	455,372		454,208		451,765
Diluted earnings per share	$	11.24	$	6.08	$	4.13

Summary of Potential Common Shares Excluded from Diluted Calculation

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

	Year ended December 31,
	2021	2020	2019
	(in thousands)
Employee stock options	348	484	1,588