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NET INCOME PER SHARE ATTRIBUTABLE TO GILEAD COMMON STOCKHOLDERS (Tables)
9 Months Ended
Sep. 30, 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 EndedNine Months Ended
September 30,September 30,
(in millions, except per share amounts)2022202120222021
Net income attributable to Gilead$1,789 $2,592 $2,952 $5,843 
Shares used in per share calculation - basic1,255 1,256 1,255 1,256 
Dilutive effect of stock options and equivalents
Shares used in per share calculation - diluted1,261 1,262 1,261 1,262 
Net income per share attributable to Gilead common stockholders - basic$1.43 $2.06 $2.35 $4.65 
Net income per share attributable to Gilead common stockholders - diluted$1.42 $2.05 $2.34 $4.63