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Estimated Future Amortization Expense Related to Intangible Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
Year Ending June 30, 2020 (excluding the six months ended December 31, 2019) $ 687  
Year Ending June 30, 2021 1,346  
Year Ending June 30, 2022 1,246  
Year Ending June 30, 2023 1,088  
Year Ending June 30, 2024 757  
Thereafter 2,002  
Net Carrying Amount $ 7,126 $ 7,750