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Goodwill And Other Acquired Intangible Assets - Estimated Future Amortization Expense for Acquired Intangible Assets Subject to Amortization (Detail)
$ in Millions
Mar. 31, 2020
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2020 (after March 31) $ 89
2021 116
2022 115
2023 111
2024 104
Thereafter 1,174
Total estimated future amortization $ 1,709