The computation of basic and diluted earnings per share was as follows:


	Year Ended December 31,
(in millions, except shares and per share amounts)		2021		2020		2019

Income from continuing operations		$	3,024	$	2,744	$	3,468
Income from discontinued operations, net of tax		—		320		—
Net income		$	3,024	$	3,064	$	3,468








Weighted-average shares outstanding – basic		1,247,154,988		1,144,206,326		854,143,751
Effect of dilutive securities:
Outstanding stock options and unvested stock awards		7,614,938		10,543,102		9,289,760


Weighted-average shares outstanding – diluted		1,254,769,926		1,154,749,428		863,433,511

Basic earnings per share:
Continuing operations		$	2.42	$	2.40	$	4.06
Discontinued operations		—		0.28		—
Earnings per share – basic		$	2.42	$	2.68	$	4.06

Diluted earnings per share:
Continuing operations		$	2.41	$	2.37	$	4.02
Discontinued operations		—		0.28		—
Earnings per share – diluted		$	2.41	$	2.65	$	4.02

Potentially dilutive securities:
Outstanding stock options and unvested stock awards		139,619		80,180		16,359
SoftBank contingent consideration (1)		48,751,557		36,630,268		—