CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares		12 Months Ended
	Jul. 30, 2021	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends, per share (in dollars per share)	$ 0.220	$ 0.86	$ 0.84	$ 0.80