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Fair Value Measurements
6 Months Ended
Jan. 31, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The financial assets and liabilities that are accounted for at fair value on a recurring basis at January 31, 2022 and July 31, 2021 are as follows:
Input LevelJanuary 31, 2022July 31, 2021
Deferred compensation plan mutual fund assetsLevel 1$56,122$51,085
Foreign currency forward contract liabilityLevel 2$943$88
Interest rate swap liabilitiesLevel 2$6,417$13,369

Deferred compensation plan assets accounted for at fair value are investments in securities traded in an active market held for the benefit of certain employees of the Company as part of a deferred compensation plan. Additional plan investments in corporate-owned life insurance are recorded at their cash surrender value, not fair value, and therefore are not included above.

The fair value of foreign currency forward contracts is estimated by discounting the difference between the contractual forward price and the current available forward price for the residual maturity of the contract using observable market rates. The fair value of interest rate swaps is determined by discounting the estimated future cash flows based on the applicable observable yield curves.