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GOODWILL AND INTANGIBLE ASSETS - Schedule of Estimated Future Amortization Expense (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
2021 (remaining nine months) $ 1,256  
2022 1,675  
2023 1,675  
2024 1,675  
2025 1,669  
Thereafter 9,661  
Net Carrying Amount $ 17,611 $ 16,236