v3.20.4
Goodwill and Intangible Assets - Definite-Lived Intangible Assets (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Definite-lived intangible assets      
Amortization of intangible assets $ 5,805,000,000 $ 1,553,000,000 $ 1,294,000,000
Definite-lived intangible assets impairment charges 0 $ 0 $ 0
Anticipated annual amortization expense      
2021 7,700,000,000    
2022 7,200,000,000    
2023 7,500,000,000    
2024 8,000,000,000.0    
2025 $ 8,400,000,000    
Minimum      
Definite-lived intangible assets      
Amortization period 1 year    
Maximum      
Definite-lived intangible assets      
Amortization period 16 years    
Weighted Average | Developed product rights      
Definite-lived intangible assets      
Amortization period 12 years    
Weighted Average | License agreements      
Definite-lived intangible assets      
Amortization period 11 years