Annual report pursuant to Section 13 and 15(d)

Revenue - Potential Milestone Payments (Details)

v3.21.1
Revenue - Potential Milestone Payments (Details) - Strategic Partnerships and Other License Agreements - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments $ 2,122  
Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments   $ 1,631
AstraZeneca | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments 1,111  
AstraZeneca | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments   960
Servier | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments 247  
Servier | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments   221
Seagen | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments $ 764  
Seagen | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Total potential milestone payments   $ 450