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Stock Compensation Plan (Tables)
 12 Months Ended
Jul. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule Of Share Based Compensation Valuation Model The risk-free rate for periods within the contractual life of the equity award is based on the United States Treasury yield curve in effect at the time of grant.
 Year ended July 31,
  
202120202019
Expected volatility30.7%29.7%38.6%
Expected dividends3.0%2.8%2.1%
Expected term (average in years)
6.6-6.9
6.5-7.1
6.0-6.6
Risk-free rate
0.1-0.6%
1.8-2.0%
2.4-2.9%
Schedule Of Share Based Compensation Option And SARs Award Activity
A summary of aggregate SARs award activity under the Plan as of July 31, 2021, 2020 and 2019, and changes during the years then ended is presented below (in thousands, except exercise price and contractual term):
AwardsWeighted-Average
Exercise Price		Weighted-Average
Remaining
Contractual Term		Aggregate
Intrinsic
Value
Outstanding at August 1, 20181,324 $91.01 
Granted80 $293.82 
Exercised(219)$49.09 
Forfeited or expired(14)$217.58   
Outstanding at July 31, 20191,171 $111.12 
Granted146 $245.26 
Exercised(247)$67.19 
Forfeited or expired(9)$252.75   
Outstanding at July 31, 20201,061 $138.59 
Granted205 $233.01 
Exercised(370)$84.20 
Forfeited or expired(23)$236.31   
Outstanding at July 31, 2021873 $181.17 5.8 years$108,910 
Vested and expected to vest at July 31, 2021852 $179.67 5.8 years$107,567 
Exercisable at July 31, 2021571 $149.21 4.3 years$89,531 
Schedule of Share Based Compensation SARs Activity
A summary of the status of the Company’s nonvested SARs as of July 31, 2021 and changes during the year then ended is presented below (in thousands, except fair value amounts):
AwardsWeighted-Average
Grant-Date
Fair Value
Nonvested at July 31, 2020215$69.45 
Granted205$52.30 
Vested(96)$73.26 
Forfeited(22)$62.93 
Nonvested at July 31, 2021302$57.22 
Schedule Of Share Based Compensation Restricted Stock Units Activity
A summary of the status of the Company’s nonvested restricted share units as of July 31, 2021 and changes during the year then ended is presented below (in thousands, except fair value amounts):
AwardsWeighted-Average
Grant-Date
Fair Value
Nonvested at July 31, 2020130$228.77 
Granted94$222.17 
Vested(66)$229.41 
Forfeited(15)$224.60 
Nonvested at July 31, 2021143$224.94