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SUBSEQUENT EVENT
3 Months Ended
Mar. 31, 2021
Subsequent Events [Abstract]  
SUBSEQUENT EVENT SUBSEQUENT EVENTIn April 2021, Gilead donated equity securities at fair value to the Gilead Foundation, a California nonprofit public benefit corporation (“Foundation”). The Foundation is a related party as certain officers of the Company also serve as directors of the Foundation. The donation expense of $206 million will be recorded within Selling, general and administrative expenses on our Condensed Consolidated Statements of Income in the second quarter of 2021.