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INTANGIBLE ASSETS AND GOODWILL - Amortization Expense (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Estimated aggregate amortization expense    
2020 $ 1,624  
2021 1,375  
2022 1,224  
2023 1,079  
2024 950  
Thereafter 2,238  
Net Carrying Amount $ 8,490 $ 10,267