XML 98 R82.htm IDEA: XBRL DOCUMENT v3.20.4
Intangible Assets - Schedule of Estimated Annual Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2021 $ 2,451  
2022 2,262  
2023 2,010  
2024 1,616  
2025 1,342  
Thereafter 5,677  
Net Book Value $ 15,358 $ 17,642