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Acquisition-related Intangible Assets, Future Amortization Expense (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets, Net, Future Amortization Expense [Abstract]    
2020  $ 1,660  
2021  1,552  
2022  1,406  
2023  1,329  
2024  1,168  
2025 and Thereafter 5,648  
Definite-Lived Intangible Assets, Net $ 12,763 $ 13,711