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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2023
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:
 Three Months EndedSix Months Ended
June 30,June 30,
(in millions, except per share amounts)2023202220232022
Net income attributable to Gilead$1,045 $1,144 $2,055 $1,163 
Shares used in basic earnings per share attributable to Gilead calculation1,249 1,256 1,249 1,255 
Dilutive effect of stock options and equivalents9 4 11 5 
Shares used in diluted earnings per share attributable to Gilead calculation1,258 1,260 1,260 1,261 
Basic earnings per share attributable to Gilead$0.84 $0.91 $1.65 $0.93 
Diluted earnings per share attributable to Gilead$0.83 $0.91 $1.63 $0.92 
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 5 million and 3 million for the three and six months ended June 30, 2023, respectively, and 20 million and 17 million, for the three and six months ended June 30, 2022, respectively.