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Intangible Assets - Schedule of Estimated Annual Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Net Book Value $ 17,642 $ 2,143
Acquired intangible assets    
Finite-Lived Intangible Assets [Line Items]    
2020 2,490  
2021 2,400  
2022 2,168  
2023 1,891  
2024 1,572  
Thereafter 7,121  
Net Book Value $ 17,642