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Long-Term Obligations and Commitments - Other Long-Term Obligations (Details) - USD ($)
$ in Millions
Jul. 31, 2021
Jul. 31, 2020
Long-Term Obligations and Commitments [Abstract]    
Long-term income tax liabilities $ 24 $ 10
Total dividend payable 17 12
Long-term deferred revenue 8 13
Other 15 17
Total long-term obligations 64 52
Less current portion (included in other current liabilities) (11) (10)
Long-term obligations due after one year $ 53 $ 42