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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Recurring [Member] - USD ($)
$ in Thousands
Jul. 31, 2019
Jul. 31, 2018
Assets:    
Foreign currency forward contracts [1] $ 4,254 $ 2,160
Total assets at fair value 4,254 2,160
Liabilities:    
Deferred compensation plans [2] 11,610 11,138
Foreign currency forward contracts [1] 3,197 2,399
Total liabilities at fair value 14,807 13,537
Level 2 [Member]    
Assets:    
Foreign currency forward contracts [1] 4,254 2,160
Total assets at fair value 4,254 2,160
Liabilities:    
Deferred compensation plans [2] 11,610 11,138
Foreign currency forward contracts [1] 3,197 2,399
Total liabilities at fair value $ 14,807 $ 13,537
[1] We enter into foreign currency forward contracts to reduce the risk of foreign currency exposures resulting from receivables, payables, intercompany receivables, intercompany payables and loans denominated in foreign currencies. Foreign exchange contracts are valued using market exchange rates. These foreign exchange contracts are not designated as hedges.
[2] Executive officers and other highly compensated employees may defer up to 100 percent of their salary and annual cash incentive compensation and for executive officers, up to 90 percent of their long-term incentive compensation, into various non-qualified deferred compensation plans. Deferrals can be allocated to various market performance measurement funds. Changes in the value of compensation deferred under these plans are recognized each period based on the fair value of the underlying measurement funds.