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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost capitalized for award under share-based payment arrangement.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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- Definition

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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- Definition

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

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Stock options, weighted average grant date fair value (in dollars per share)	$ 14.24	$ 10.23	$ 10.93
Intrinsic value of stock options exercised	$ 7.8	$ 22.6	$ 18.3
Intrinsic value of shares outstanding	64.0
Intrinsic value of shares exercisable	$ 58.2
Stock options
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
Pre-tax compensation expense associated with stock options	$ 11.6	10.8	10.4
Shares reserved for outstanding options and future grants (in shares)	9,793,539
Total unrecognized compensation expense related to non-vested stock options	$ 6.8
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award
Total unrecognized compensation expense related to non-vested stock options	$ 7.9
Performance shares \| 2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Performance awards measurement period (in years)	3 years
Performance award expense	$ 7.2	$ 1.9	$ 3.4
Performance shares \| 2019 Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Target payout percentage (percent)	0.00%
Performance shares \| 2019 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Target payout percentage (percent)	200.00%