Stock-Based Compensation (Narratives) (Details) - 2019 Master Stock Incentive Plan	3 Months Ended
Oct. 31, 2020
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Stock options exercisable term (in years)	10 years
Stock option, award vesting period (in years)	3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Performance award measurement period (in years)	3 years
Expiration period (in years)	3 years
Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Payout percentage based on target award (percentage)	0.00%
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Payout percentage based on target award (percentage)	200.00%

Share-Based Compensation Arrange By Share-Based Payment Award, Award Target Payout, Percentage

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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