SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Income Per Share, Additional Information (Details) shares in Thousands	12 Months Ended
	Jul. 28, 2018 class_common_stock shares	Jul. 29, 2017 shares
Accounting Policies [Abstract]
Number of common stock classes | class_common_stock	2
Common stock cash dividends, percent Class A is entitled greater than Class B	54.00%
Class A Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Class A shares excluded from computation of earnings per share (in shares)	9	376
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Class A shares excluded from computation of earnings per share (in shares)	356	361