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NET INCOME PER SHARE ATTRIBUTABLE TO GILEAD COMMON STOCKHOLDERS (Tables)
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Schedule of the Calculation of Basic and Diluted Earnings Per Share
The following table shows the calculation of basic and diluted net income per share attributable to Gilead common stockholders:
 Three Months Ended
March 31,
(in millions, except per share amounts)20222021
Net income attributable to Gilead$19 $1,729 
Shares used in per share calculation - basic1,255 1,256 
Dilutive effect of stock options and equivalents
Shares used in per share calculation - diluted1,262 1,262 
Net income per share attributable to Gilead common stockholders - basic$0.02 $1.38 
Net income per share attributable to Gilead common stockholders - diluted$0.02 $1.37