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Goodwill and Other Intangible Assets - Schedule of Amortization Expense Related to Other Intangible Assets for Next Five Fiscal Years (Details)
$ in Millions
Mar. 31, 2020
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2021 $ 46
2022 45
2023 43
2024 8
2025 $ 4