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Stock Repurchases (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Oct. 31, 2019 USD ($) $ / shares shares
Share-Based Compensation Arrangement By Share-Based Payment Award, Options Exercisable [Abstract]
Options Exercised	4,710,000
Weighted Average Exercise Price | $ / shares	$ 17.81
Vincent W. Mitz, the President | Common Stock
Share-Based Compensation Arrangement By Share-Based Payment Award, Options Exercisable [Abstract]
Options Exercised	4,000,000
Weighted Average Exercise Price | $ / shares	$ 17.81
Shares Net Settled for Exercise	865,719
Shares Withheld for Taxes(1)	1,231,595
Net Shares to Employees	1,902,686
Weighted Average Share Price for Withholding | $ / shares	$ 82.29
Employee Stock-Based Tax Withholding (in 000s) | $	$ 101,348

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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