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Earnings Per Share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share EARNINGS PER SHARE
The following table shows the calculation of basic and diluted earnings per share attributable to Gilead:
Year Ended December 31,
(in millions, except per share amounts)202220212020
Net income attributable to Gilead$4,592 $6,225 $123 
Shares used in basic earnings per share attributable to Gilead calculation1,255 1,256 1,257 
Dilutive effect of stock options and equivalents7 6 6 
Shares used in diluted earnings per share attributable to Gilead calculation1,262 1,262 1,263 
Basic earnings per share attributable to Gilead$3.66 $4.96 $0.10 
Diluted earnings per share attributable to Gilead$3.64 $4.93 $0.10 
Potential shares of common stock excluded from the computation of Diluted earnings per share attributable to Gilead because their effect would have been antidilutive were 12 million, 15 million and 13 million during 2022, 2021 and 2020, respectively.