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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Jan. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 15, 2022, the Board of Directors declared a quarterly cash dividend to shareholders of the Company’s Class A and Class B Common Stock of $0.225 per share payable on April 29, 2022, to shareholders of record at the close of business on April 8, 2022. Subsequent to January 31, 2022, the Company has purchased 181,514 shares of its Class A Nonvoting Common Stock under its share repurchase program for an aggregate purchase price of $9.0 million and an average purchase price per share of $49.71. As of February 16, 2022, 1,387,730 shares remained authorized to purchase in connection with this share repurchase program.