v3.26.1
INVESTMENTS - Related Party Transaction (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Related Party Transaction [Line Items]    
Selling, general and administrative expenses $ 1,451 $ 1,258
Gilead Foundation | Related Party    
Related Party Transaction [Line Items]    
Selling, general and administrative expenses $ 63