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Stock-Based Compensation (Narratives) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Oct. 31, 2021 | Oct. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options granted, grant date fair value (in usd per share) | $ 14.24 | $ 10.08
Employee Stock Option |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Pretax performance-based award expense | $ 6.9 | $ 5.1
Performance Shares |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Pretax performance-based award expense | $ 1.7 | $ 0.9
2019 Master Stock Incentive Plan | 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 |
2019 Master Stock Incentive Plan | 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 |
2019 Master Stock Incentive Plan | Performance Shares | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Payout percentage based on target award (percentage) | 0.00% |
2019 Master Stock Incentive Plan | Performance Shares | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Payout percentage based on target award (percentage) | 200.00% |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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