v3.26.1
Acquisition, In-Licensing Arrangement, Sale of Investment and Research and Development Arrangement - Sale of Investment (Details) - ViiV [Member] - USD ($)
$ in Millions
6 Months Ended
Mar. 31, 2026
Jun. 28, 2026
Jun. 29, 2025
Schedule of Equity Method Investments [Line Items]      
Equity method investment, ownership percentage 11.70%    
Proceeds from sale of investment $ 1,875 $ 1,875 $ 0