Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Computation of Earnings Per Share

The computation of earnings per share is as follows:

	Three Months Ended
	March 31, 2019		March 31, 2018
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	344,052	$	290,124
Shares used in computation:
Weighted-average common shares outstanding	436,947		434,174
Basic earnings per share	$	0.79	$	0.67
Diluted earnings per share:
Net income	$	344,052	$	290,124
Shares used in computation:
Weighted-average common shares outstanding	436,947		434,174
Employee stock options	14,975		16,185
Weighted-average number of shares	451,922		450,359
Diluted earnings per share	$	0.76	$	0.64