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Stock Compensation Plan (Schedule Of Share Based Compensation Option And SARs Award Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Jul. 31, 2019 | Jul. 31, 2018 | Jul. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Awards, outstanding beginning balance (in shares) | 1,324 | 2,290 | 2,381
Awards, granted (in shares) | 80 | 86 | 143
Awards, exercised (in shares) | (219) | (1,049) | (215)
Awards, forfeited or expired (in shares) | (14) | (3) | (19)
Awards, outstanding ending balance (in shares) | 1,171 | 1,324 | 2,290
Awards, exercisable ending balance (in shares) | 1,003 |  |
Weighted-average exercise price, outstanding beginning balance (in dollars per share) | $ 91.01 | $ 59.12 | $ 52.98
Weighted-average exercise price, granted (in dollars per share) | 293.82 | 237.86 | 174.42
Weighted-average exercise price, exercised (in dollars per share) | 49.09 | 33.25 | 60.05
Weighted-average exercise price, forfeited or expired (in dollars per share) | 217.58 | 172.03 | 108.06
Weighted-average exercise price, outstanding ending balance (in dollars per share) | 111.12 | $ 91.01 | $ 59.12
Weighted-average exercise price, exercisable ending balance (in dollars per share) | $ 87.92 |  |
Weighted-average remaining contractual term, outstanding ending balance (in years) | 4 years 11 months |  |
Weighted-average remaining contractual term, exercisable ending balance (in years) | 4 years 5 months |  |
Aggregate intrinsic value, outstanding ending balance | $ 162,835 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number | 1,160 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ 109.93 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term | 4 years 11 months |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ 162,604 |  |
Aggregate intrinsic value, exercisable ending balance | $ 159,244 |  |

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- Definition The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options and stock appreciation rights outstanding and currently exercisable under the option plan as of the balance sheet date. + References No definition available. + Details
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- Definition The number of shares into which fully or partially vested stock options and stock appreciation rights outstanding as of the balance sheet date can be currently converted under the plan. + References No definition available. + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options and stock appreciation rights outstanding and currently exercisable under the plan. + References No definition available. + Details
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- Definition The weighted average period between the balance sheet date and expiration for all vested portions of options and stock appreciation rights outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years. + References No definition available. + Details
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- Definition The weighted average price at which option and stock appreciation right holders acquired shares when converting their stock options or stock appreciation rights into shares under the plan during the reporting period. + References No definition available. + Details
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- Definition For presentations that combine terminations, the number of shares under options and stock appreciation rights that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the plan or that expired. + References No definition available. + Details
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- Definition Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + 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 (e)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + 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 (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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