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Goodwill and Intangible Assets (Amortization Expense Expected to be Recognized) (Details)
$ in Millions
Jul. 31, 2021
USD ($)
Goodwill and Intangible Assets [Abstract]  
Remainder of fiscal 2022 $ 40
Fiscal 2023 79
Fiscal 2024 54
Fiscal 2025 16
Fiscal 2026 16
Fiscal 2027 13
Thereafter $ 43