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Derivatives and Hedging - Financial Statement Impact of Derivatives (Details) - USD ($) $ in Thousands | 3 Months Ended
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Oct. 31, 2020 | Oct. 31, 2019
Not designated as hedging instrument |  |
Gain (Loss) recognized in Other Comprehensive Income, net of tax |  |
Total gain (loss) | $ 3,332 | $ (3,722)
Foreign currency forward contracts | Not designated as hedging instrument |  |
Gain (Loss) recognized in Other Comprehensive Income, net of tax |  |
Total gain (loss) | 0 | (525)
Interest rate swap agreements | Not designated as hedging instrument |  |
Gain (Loss) recognized in Other Comprehensive Income, net of tax |  |
Total gain (loss) | 3,332 | (3,197)
Sales |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
Total (loss) | 0 | 0
Sales | Foreign currency forward contracts | Designated as hedging instrument | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
(Loss) Reclassified from AOCI, Net of Tax | 0 | 0
Sales | Interest rate swap agreements | Designated as hedging instrument | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
(Loss) Reclassified from AOCI, Net of Tax | 0 | 0
Sales | Interest rate swap agreements | Not designated as hedging instrument |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
Amount of loss recognized in income, net of tax | 0 | 0
Interest expense |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
Total (loss) | (2,812) | (570)
Interest expense | Foreign currency forward contracts | Designated as hedging instrument | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
(Loss) Reclassified from AOCI, Net of Tax | 0 | 0
Interest expense | Interest rate swap agreements | Designated as hedging instrument | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
(Loss) Reclassified from AOCI, Net of Tax | (2,774) | (495)
Interest expense | Interest rate swap agreements | Not designated as hedging instrument |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |
Amount of loss recognized in income, net of tax | $ (38) | $ (75)

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