Derivatives and Hedging Activities - Fair Value Balance Sheet Disclosure (Detail) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Derivatives, Fair Value [Line Items]
Derivatives Assets	$ 594
Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	777	$ 5
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets		474
Current maturities on long-term debt [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		50,189
Foreign currency denominated debt [Member] | Designated as hedging instruments [Member] | Other current liabilities [Member] | Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Foreign currency denominated debt [Member] | Designated as hedging instruments [Member] | Prepaid expenses and other current assets [Member] | Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets	0	0
Foreign currency denominated debt [Member] | Designated as hedging instruments [Member] | Current maturities on long-term debt [Member] | Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		50,189
Foreign Exchange Contract [Member] | Not designated as hedging Instruments [Member] | Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	16	5
Foreign Exchange Contract [Member] | Not designated as hedging Instruments [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets	6	2
Foreign Exchange Contract [Member] | Not designated as hedging Instruments [Member] | Current maturities on long-term debt [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		0
Foreign Exchange Contract [Member] | Designated as hedging instruments [Member] | Other current liabilities [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	761	0
Foreign Exchange Contract [Member] | Designated as hedging instruments [Member] | Prepaid expenses and other current assets [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets	$ 588	472
Foreign Exchange Contract [Member] | Designated as hedging instruments [Member] | Current maturities on long-term debt [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities		$ 0