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Intangible Assets (Intangible Assets with Finite Lives) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Jul. 31, 2022
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount $ 449,933,000   $ 449,933,000
Accumulated Amortization 207,979,000   202,630,000
Net Carrying Amount 241,954,000   $ 247,303,000
Amortization of intangibles $ 5,349,000 $ 5,349,000  
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 20 years 2 months 12 days   20 years 2 months 12 days
Gross Carrying Amount $ 302,058,000   $ 302,058,000
Accumulated Amortization 111,071,000   107,500,000
Net Carrying Amount $ 190,987,000   $ 194,558,000
Technologies      
Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 14 years 9 months 18 days   14 years 9 months 18 days
Gross Carrying Amount $ 114,949,000   $ 114,949,000
Accumulated Amortization 77,017,000   75,798,000
Net Carrying Amount $ 37,932,000   $ 39,151,000
Trademarks and other      
Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 16 years 8 months 12 days   16 years 8 months 12 days
Gross Carrying Amount $ 32,926,000   $ 32,926,000
Accumulated Amortization 19,891,000   19,332,000
Net Carrying Amount $ 13,035,000   $ 13,594,000