NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO GILEAD COMMON STOCKHOLDERS (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of the Calculation of Basic and Diluted Earnings Per Share

The following table summarizes the calculation of basic and diluted net income (loss) per share attributable to Gilead common stockholders:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in millions, except per share amounts)	2021		2020		2021		2020
Net income (loss) attributable to Gilead	$	1,522	$	(3,339)	$	3,251	$	(1,788)
Shares used in per share calculation - basic	1,255		1,255		1,256		1,258
Dilutive effect of stock options and equivalents	5		—		5		—
Shares used in per share calculation - diluted	1,260		1,255		1,261		1,258
Net income (loss) per share attributable to Gilead common stockholders - basic	$	1.21	$	(2.66)	$	2.59	$	(1.42)
Net income (loss) per share attributable to Gilead common stockholders - diluted	$	1.21	$	(2.66)	$	2.58	$	(1.42)