FAIR VALUE MEASUREMENTS (Detail) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan mutual fund assets	$ 61,290	$ 53,828
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	227,154	130,100
Deferred compensation plan mutual fund assets	47,327	53,828
Deferred compensation plan liabilities	61,290	53,828
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liabilities	$ 26,664	$ 12,463