Annual report pursuant to Section 13 and 15(d)

Revenue - Potential Milestone Payments (Details)

v3.20.1
Revenue - Potential Milestone Payments (Details) - Strategic Partnerships and Other License Agreements - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments $ 2,679  
Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments   $ 2,117
AstraZeneca | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments 1,111  
AstraZeneca | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments   960
Servier | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments 799  
Servier | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments   707
Seattle Genetics | Research, Development, Regulatory & Commercial Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments $ 769  
Seattle Genetics | Sales Milestones    
Revenue Recognition, Milestone Method [Line Items]    
Potential milestone payments   $ 450