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Long-Term Obligations and Commitments - Other Long-Term Obligations (Details) - USD ($)
$ in Millions
Jan. 31, 2021
Jul. 31, 2020
Debt Disclosure [Abstract]    
Long-term income tax liabilities $ 26 $ 10
Total dividend payable 11 12
Long-term deferred revenue 7 13
Other 11 17
Total long-term obligations 55 52
Less current portion (included in other current liabilities) (6) (10)
Long-term obligations due after one year 49 $ 42
Non-cancellable contractual commitments $ 318