Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Computation of Earnings Per Share

The computation of earnings per share is as follows:

	Three Months Ended				Six Months Ended
	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	1,353,013	$	720,196	$	3,059,728	$	1,429,263
Shares used in computation:
Weighted-average shares of common stock outstanding	443,159		440,569		443,192		439,961
Basic earnings per share	$	3.05	$	1.63	$	6.90	$	3.25
Diluted earnings per share:
Net income	$	1,353,013	$	720,196	$	3,059,728	$	1,429,263
Shares used in computation:
Weighted-average shares of common stock outstanding	443,159		440,569		443,192		439,961
Employee stock options	11,970		13,376		12,193		13,259
Weighted-average number of shares	455,129		453,945		455,385		453,220
Diluted earnings per share	$	2.97	$	1.59	$	6.72	$	3.15

Summary of Potential Common Shares Excluded from the Diluted Calculation

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

	Three Months Ended		Six Months Ended
	June 30, 2021	June 30, 2020	June 30, 2021	June 30, 2020
	(in thousands)
Employee stock options	788	39	523	777