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Investments and Fair Value Measurements (Tables)
6 Months Ended
Jan. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets Measured on Recurring Basis
The financial assets that were accounted for at fair value on a recurring basis at January 31, 2019 and July 31, 2018 are as follows:
 
 
 
Input Level
 
January 31, 2019
 
 
July 31, 2018
 
Cash equivalents
 
Level 1
 
$
148,023
 
 
$
230,319
 
Deferred compensation plan assets and liabilities
 
Level 1
 
$
46,744
 
 
$
43,316
 
Foreign currency forward contract liability
 
Level 2
 
$
73,707
 
 
$
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